Sibling-Strategy Round — Part D (journal results 10–18)

Integration of result lines 10–18 from workflow wf_c247de61-eb3 (2026-07-21). Journal results carry no label field; labels below are derived slugs. Confidence discipline: any "CONFIRMED" resting solely on Find A Grave contributor data is downgraded to PROBABLE here, per round policy. Ground truth checked against 2026-07-20-wilson-tree-v0.md and 2026-07-21-lineage-research-partA/B.md.

Adella Rogers Olney (adella-rogers-olney)

Verdict: Direct-line grandmother of Eleanor Lambert Wilson richly fleshed out; one infant sibling found; agent independently re-derived the Florence Olney × Walter Rittenhouse Lambert marriage (children incl. "Elinore") — an unwitting cross-confirmation of the direct Lambert line.

Siblings found: Edgar M. Rogers — Sept 1871 – 30 Oct 1871 (infant, chickenpox) — FaG 58363540, cross-linked on father's and Adella's memorials, buried in father's Green-Wood plot — PROBABLE (downgraded from CONFIRMED: FaG-only, three memorials but one platform).

Parents found: Edgar Rogers (1837 – 1 Oct 1875 NYC, "apoplexy", Green-Wood Lot 3504/Sect 69) + Mary A. Sharp (1845–1923, m1. Rogers 1862, m2. John Henry Selmes 1878) — PROBABLE (FaG memorial network + plot-match logic; matches tree v0 line 117 exactly). Maternal grandfather Jacob "Jake" Sharp (1817–1888, Boodle-scandal streetcar magnate) + Catharine Munson — already in tree.

Key facts:

• Adella d. 14 Dec 1918 Rome NY, Rome Cemetery Sect FF Lot 1 — FaG 121450448 + 1925 Mohawk Valley county biography (independent) — CONFIRMED
• m. James P. Olney 2 Feb 1887 NYC — 1925 county bio verbatim — CONFIRMED
• Birth Oct 1865, "Rome NY" birthplace contributor-inferred — POSSIBLE
• Daughters: Florence Armitage Olney (1889–1975) m. 1912 Walter Rittenhouse Lambert — 3 children Barbara, Elinore, Louise Lambert (= the direct line to Eleanor Lambert Wilson) — FaG + 1925 bio — CONFIRMED
• Marion Selmes Olney (1893–1983) m. Stoddard Stevens Jr; buried Nantucket — PROBABLE
• No Selmes half-siblings documented 1878–1916 — absence-of-evidence — PROBABLE

Top leads: (1) 1870/1880 census for Rogers household + full NYT Selmes obit (settles half-sibling question); (2) James P. Olney birthplace conflict (see contradiction); (3) Jacob Sharp's own parentage (notable figure, sources likely).

Dead ends: FaG search endpoints CAPTCHA-walled; no Adella obituary found; "Mary E. Selmes" checked and unconnected.

CONTRADICTION vs tree v0 (line 66): tree gives James Preserved Olney "b. 1856 Nantucket"; the 1925 county bio says b. Western, Oneida Co NY, son of William R. + Sarah M. (Salisbury) Olney. Agent weights the published bio. Note bio also confirms "great-grandson of William Olney who settled Western 1793" — independent second-source corroboration of the tree's Olney chain.

James Madison Thomasson (thomasson-james-madison, r2-style verification + siblings)

Verdict: R2-CONFIRMED the round-1 claim that Susannah Jane Thomasson (m. Wm Nathaniel LeQuire) is his daughter, and EXTENDED the line one generation (father Lemuel Thomasson found); flagged a round-1 contamination for striking.

Siblings found (= Susannah Jane's sibling set, i.e. his children): Levi Lemuel Thomasson (1840–1899, m. Sarah Jane Davis) — FaG 17941234 + WikiTree, reciprocal parent naming — PROBABLE (FaG/WikiTree aggregator convergence, downgraded from CONFIRMED). Elizabeth L. "Betty" Duvall (1840–1926), Jacob LaFayette "Jake" (1847–1925), Margaret Mary Davis (1849–1919) — same cross-listing — PROBABLE each. Sarah Rebecca DeHart (1838–1862) — PROBABLE. Mary Rachel (~1836), Isabella E. (~1846) — WikiTree-only — POSSIBLE. William Hiram/H.C. (~1844) and Ellen "Ellender" Dehart McHan (~1857–1929) — half-vs-full status conflicts between sources — POSSIBLE.

Parents found: Lemuel Thomasson (b. 8 Dec 1785 Granville Co NC, d. after 1849) — FaG + WikiTree day-level date match, but aggregators are not independent; no primary record — PROBABLE. Mother unnamed (b. 28 Jan 1787 York District SC, d. 1887 — dates without a name on WikiTree) — POSSIBLE.

Key facts:

• b. 18 May 1809 York District SC; d. 16 Mar 1891 Brush Creek, Bryson City, Swain Co NC; buried Sawmill Hill FWB Church Cem. next to wife — FaG 20892495 + WikiTree — PROBABLE
• m. Susannah Rebecca Truitt 7 Dec 1832 Macon Co NC, age 23 — WikiTree bio, independent of the round-1 genealogy.com citation — CONFIRMED
• Wife's death year conflict FaG 1890 vs WikiTree 1896 — flagged, see Truitt section — resolved to 1890 there

Top leads: (1) name the mother (SC/NC marriage records c.1805-08; WikiTree Thomasson-140 retry); (2) Lemuel Thomasson one generation back (1849 will/tax search); (3) resolve DeHart name recurrence (Sarah's married surname + Ellen's middle name).

Dead ends: WikiTree Thomasson-140 privacy-blocked twice; Martha Jane Watkins (1800–1871) is NOT a Thomasson daughter — chronologically impossible (b. 9 yrs before James Madison). Ground-truth note: tree already places her correctly as wife of Joseph LeQuire Sr (partA L139, partB L308) — no tree change needed, but the round-1 sibling brief's framing must not be propagated.

Susannah Rebecca Truitt (truitt-susannah, r2-style verification + siblings)

Verdict: R2-CONFIRMED as Susannah Jane Thomasson's mother via two independent child-memorial anchors; EXTENDED — her parents found with a will-anchored father; ~10 Truitt siblings surfaced; death-date conflict resolved.

Siblings found: James Alfred Truitt (1795–1870), Judge Levi Isaac Trewhitt (1797–1862), Sarah "Sallie" m. Jack Kyle (b. 1798), Jeremiah (1800–1838), Thomas Isaac (1805–1841), Solomon (1807–1858) — each WikiTree + FaG sibling-panel cross-match — PROBABLE. Mary "Polly" m. John Edwards, Jesse Trewhitt, half-siblings Alfred Levi and John Wesley "Wes" (m. Cynthia Miller) — WikiTree-only — POSSIBLE. (Note the Trewhitt spelling drift — a judge in the set is a research gift.)

Parents found: Levi Marion Truitt Jr. (c.1775 Craven Co NC – 15 Dec 1830 Brush Creek, Macon Co NC; will quoted verbatim "I Levi Truitt of Macon County..."; buried Brush Creek Baptist Church Cem.) + Susannah Morgan (c.1778 – 11 Jul 1860; m. 1795 Rutherford Co NC) — CONFIRMED (will text is primary-adjacent; WikiTree + FaG converge).

Key facts:

• Her own FaG 20892517: b. 25 Jun 1817 NC, d. 16 Nov 1890 Swain Co, buried Sawmill Hill FWB — PROBABLE (FaG-only)
• Death-date conflict resolved: 16 Nov 1890 (own memorial + both children's memorials agree on 1890; WikiTree "1896" assessed as data-entry error) — PROBABLE
• Mother-daughter link to Susannah Jane: her memorial names mother verbatim, same cemetery; second anchor via son Lemuel Levi's memorial — CONFIRMED (two independent anchors)
• Grandchildren via Susannah Jane: Joseph Isaac Lequire (1861–1917), Sarah Elizabeth Lequire Gibby (1866–1917) — matches tree's direct line — PROBABLE
• Grandfather candidate Levi Trewit (c.1744 – 16 Dec 1777) — WikiTree bio only — POSSIBLE

Top leads: (1) Truitt one more generation back (Levi Trewit c.1744); (2) Susannah Morgan's Morgan parents (Rowan Co NC death place); (3) children's post-1913 NC death certs to lock parentage via named informants.

Dead ends: FaG search CAPTCHA-walled (route via WikiTree-cited memorial IDs instead). Watkins mis-framing re-flagged (see Thomasson section). Quarantine reminder: NC Sarah Elizabeth Lequire Gibby (direct line) must never be conflated with the unrelated Utah/Welsh Gibbys.

Sally Caylor (caylor-sally, r2 parent-verification)

Verdict: R2 DOWNGRADED — the round-1 claim that Sally Caylor is Rowena Rowland's mother rests entirely on one uncited compiler tree (martygrant.com); Sally herself has zero independent documentary footprint. POSSIBLE only.

Siblings found (alleged, all from the same uncited family group sheet): George F Caylor (21 Oct 1796 Buncombe Co NC – 10 Jun 1881 Grayson Co TX, m. Rebecca Mahaffey), Rebecca Caylor (1799/1800 – 1868 Macon Co NC, m. Samuel Decater Bryson), unnamed daughter m. a Lindsay — all POSSIBLE. The day-level dates on George and Rebecca suggest the compiler had real uncited sources for THEM — the best wedge for finding Sally.

Parents found (alleged): Jacob Caylor (b. 1760/65 – d. after 1830, Buncombe Co NC) + Martha (no surname, no dates). Jacob himself is REAL — primary source quoted verbatim: Newfound Baptist Church Minutes, 15 Jul 1814, "Recied Broth Jacob Caylar by letter into our church felowship" (ed. Wes Patterson 2022). But the church record names no children; "Sally is his daughter" carries zero citation — POSSIBLE.

Key facts:

• Rowena listed as the ONLY child of Malachi Rowland + Sally Caylor; Malachi's page has no census citation at all — the sibling reconstruction the round was meant to run has never actually been done — POSSIBLE
• Rowena m. Daniel Alexander Gibby 3 Mar 1840 Macon Co NC; couple tracked 1850/60/70/80 censuses — PROBABLE
• No FaG memorial or web trace anywhere for Malachi Rowland or Sally (Caylor) Rowland — CONFIRMED negative

Top leads: (1) full Newfound Baptist Church Minutes index; (2) trace siblings George/Rebecca forward for a will naming Sally; (3) Macon/Haywood marriage bonds for Rowland×Caylor; FamilySearch-gated round when login available.

Dead ends: rowlandgenealogy.com no mention; no WikiTree Rowena profile; NC Digital Collections Rowland papers JS-walled.

Malachi Rowland (rowland-malachi, r2 parent-verification)

Verdict: R2 MAJOR DOWNGRADE — the entire "Malachi Rowland" thread is a single uncited compiler assertion; he is a name-only placeholder with no dates, no records, no independent trace. Keep in tree as POSSIBLE, marked "compiler assertion, unconfirmed"; do not extend his line.

Siblings found: None — and the compiler's own Rowland surname index holds only 3 unconnected Rowlands database-wide (one explicitly marked unrelated by the compiler himself). Sibling-first method blocked at his generation; 1850/60 census access (login-walled) is the actual test not yet run.

Parents found: None.

Key facts:

• What survives the downgrade: Rowena Rowland m. Daniel Alexander Gibby 3 (or 5) Mar 1840 Macon Co NC — two-source cross-corroborated (martygrant marriage-bond abstract + Daniel's FaG 125502648 independently listing same marriage) — CONFIRMED
• Daniel Alexander Gibby: b. 1 Apr 1818 Haywood Co NC, d. 28 Nov 1889 Swain Co, buried Laurel Branch Cem., Bryson City — FaG + compiler agree — PROBABLE (FaG-anchored)
• Malachi/Sally parent fields on Rowena's page carry zero footnotes — verified by pulling full verbatim notes sections — CONFIRMED (of the absence)
• Daniel's ADOPTIVE parents Jonathan Gibby/Gabby (c.1775–c.1855) + Elizabeth "Betsy" Bryson (c.1775–1837); FaG lore says orphaned ~age 8 when birth parents killed — reinforces but does NOT upgrade the existing "Jonathan Gabby POSSIBLE-only" quarantine — PROBABLE
• No FaG memorial exists for Rowena under any spelling; children's memorials list only father Daniel, no mother — CONFIRMED negative

Top leads: (1) original 1840 Macon Co marriage bond image — bondsman may be a Rowland relative (strongest available anchor); (2) James S Gibby's post-1913 NC death cert for a vital-record maiden-name confirmation of Rowena; (3) Newfound Baptist Church Minutes full index for Rowlands.

Dead ends: "Malachi Rowland" zero web hits in every phrasing, two rounds running; 33 FaG namesakes all non-NC; no Rowland burials near the Gibby plot at Laurel Branch.

Contradiction note vs tree v0: tree carries Rowena as "~1818–1895"; this round's sources document her only to the 1880 census ("d. after 1880"). The 1895 death date's source should be re-checked when Rowena's memorial/record is eventually found — not a hard contradiction, but the 1895 figure is currently unanchored in this round's evidence.

Mary A. "Adaline/Adeline" Foster (foster-mary-adaline, r2 parent-verification)

Verdict: R2 EXTENDED the round-1 claim — Mary A. as Lumpkin's wife and mother of the Foster children now has a two-census independent anchor (PROBABLE); the "Hooper" maiden name remains UNPROVEN by this agent (death certs not viewable), consistent with tree v0's strike — but see the Lumpkin section below for new FaG support.

Siblings found: None for Mary herself (Hooper family untraceable this round). Sibling set of Julius reconstructed via census: Erastus H. (b.~1885, wife Minnie — matches round-1 death-cert informant), Lassa/Lassie C., Franklin L., Lizzie H./Elizabeth A., Lona (C.), Lavenia and/or Edna V. (possibly same child — unresolved), Thomas G. — 1900 + 1910 Towns Co GA censuses — PROBABLE (proxy-summarized rootsweb transcription; telephone-game risk explicitly flagged).

Parents found: None. Live contradiction on her parents' birthplaces: 1900 census says both NC; 1910 says both GA — unresolved, bears directly on the Hooper search vector.

Key facts:

• 1900 + 1910 census, Lower Hiwassee Dist., Towns Co GA: Mary A. Foster (b.~1856-58 GA) wife of Lumpkin G. Foster with matching children — PROBABLE
• Julius Calloway Foster FaG 16161999 located (re-confirms partA's false-negative correction): Woods Grove Memorial Cem., spouses Eva C. Brown + Maggie Ballard, 8 children; no parents field — PROBABLE (FaG-only)
• No FaG memorial for Mary under any variant; burial/death date unknown — CONFIRMED negative for FaG

Top leads: (1) browser-session pull of the 1925/1927 GA death certs (Virtual Vault is JS-walled — needs claude-in-chrome); (2) resolve NC-vs-GA parents' birthplace conflict; (3) sibling death certs (Franklin L., Lona, Thomas G. et al.) as independent "Hooper" tests.

Dead ends: rootsweb Hooper page 404; Union Co has no matching Fosters; Woods Grove cemetery browse CAPTCHA-walled; Georgia Archives CONTENTdm returns no data to WebFetch.

Lumpkin Gaither "Gather" Foster (foster-lumpkin, r2 follow-through + siblings)

Verdict: R2 CONFIRMED-and-EXTENDED — father Franklin Calloway Foster locked (death cert + 3-census continuity), NINE siblings of Lumpkin recovered, his burial found, and the struck "Hooper" maiden name gains new (single-FaG) support.

Siblings found (children of Franklin C. + Harriett Foster): Lucinda Adaline Foster Owen (~1850–1919, census x2 + FaG — do NOT conflate with niece "Cindy" b.1877) — PROBABLE; Julius Woodfin Foster (1852–1933; census as child AND 1900 head — QUARANTINE: the uncle, distinct from nephew Julius Calloway b.1878; two Julius Fosters, do not merge) — PROBABLE; Weston Hyatt Foster (1858–1906; three census spellings resolved) — PROBABLE; Osborne Calloway Foster (1862–1926; given name echoes mother's alleged maiden name Osborn) — PROBABLE; Alice Malinda "Icy" Foster Burrell (1865–1897) — PROBABLE; Ollie Virginia Wood (~1869–1947, twin) — PROBABLE; Henry N. (1848–1855), Sarah A./"Loratee" (~1854, vanishes after 1870), Meresa/Minerva/Marsilla Foster Woods (~1858/60–1924, possible two-daughters conflation), Ida C. (~1869, twin, no adult trace) — POSSIBLE. (All FaG+census; downgraded one notch per round policy.)

Parents found: Franklin Calloway Foster (~1830–1911) — 1925 death cert "Frank Foster" + 1860/1870/1880 census continuity ("Larkin" 1860 = transcription variant) — CONFIRMED. Harriett Malinda Osborn (~1826 NC – 1880) — census x3; maiden name Osborn is FaG-tree-only (death-cert informant wrote "Dont know") — PROBABLE, Osborn itself POSSIBLE.

Key facts:

• Lumpkin buried Lower Hightower Baptist Church Cem., Hiawassee — FaG 104268120, corroborates death-cert dates — PROBABLE
• Wife listed on FaG as "Mary Adeline Hooper Foster (1855–1932)" — first support for Hooper since the strike; still single-FaG — POSSIBLE-to-PROBABLE, pending cert verification
• Gather→Julius edge: 1880 census "Julius Foster (son) age 1" + adult-household name-matching — PROBABLE (Julius absent from 1900 household and from Gather's FaG children list — life-course departure, but no direct parent-naming document yet)
• Bertha Foster Gibby (1923–1995), Julius's daughter — GA Gibby-by-marriage, quarantine from Utah/Welsh Gibbys — POSSIBLE

Top leads: (1) Julius's 1947 GA death cert via browser session — would CONFIRM the edge; (2) Osborn sibling-first sweep for Harriett; (3) re-verify the suspicious 1920 census duplicate.

Dead ends: Virtual Vault JS-walled; no WikiTree coverage; session WebSearch budget exhausted at 2 queries (200/200 session-wide — round-3 planning note).

Mary Williams, wife of John Sayles (williams-mary, r2 verification of the Roger Williams link)

Verdict: R2 CONFIRMED the Roger Williams connection with a primary-source-grade anchor and CORRECTED the round-1 birth year: Mary Williams b. Aug 1633 (eldest child), not 1638 — the round-1 "Austin p.370" quote was likely Mercy's entry or an OCR 3→8 misread.

Siblings found (children of Roger Williams + Mary Barnard): Freeborn (b. 4 Oct 1635 Salem; Austin Clarke entry "of Roger & Mary ( ) Williams") — PROBABLE; Mercy (Austin prints b.1638, modern sources 15 Jul 1640; m. Resolved Waterman then Samuel Winsor 1677) — PROBABLE; Providence (b. Sept 1638), Daniel (b. Feb 1641/2), Joseph (b. 12 Dec 1643, m. Lydia Olney) — modern compilations only this pass — POSSIBLE.

Parents found: Roger Williams (c.1603–1683) — CONFIRMED via the 1670 deed quoted in Austin's Sayles entry: John Sayles sold Pawtuxet land "which my father-in-law Mr. Roger Williams gave me" — date+place+named-relative anchor independent of any genealogist's table. Mary Barnard (1609–1676, m. 15 Dec 1629 High Laver, Essex) — modern compilations; Austin leaves her maiden name blank — PROBABLE.

Key facts:

• Austin's Olney entry directly tags Catharine "of John & Mary (Williams) Sayles" — full-text-search verified — CONFIRMED
• Catharine's sibling set (7 children of John + Mary Sayles) structurally corroborated by Austin cross-references in Holmes/Greene/Tillinghast/Carr entries — PROBABLE
• Mary's death 1681 vs 1684 (rogerwilliams.org) — unresolved
• Catharine's marriage date 28 vs 18 Dec 1692 — unresolved
• QUARANTINE: "Edward & Mary (Williams) Sands" (Austin) is a DIFFERENT Mary Williams; the NEQ article "More Than Roger's Wife" is about Mary BARNARD, not the daughter

Top leads: (1) pull Austin's Sayles page images (OCR badly degraded on vital lines); (2) Providence Land Evidence / LaFantasie correspondence for the 1670 deed's primary text; (3) RI vitals for the two date conflicts.

Dead ends: round-1's exact "b.1638,Aug" string not found anywhere in Austin's full text; "Easton's beach" burial claim not in Austin; WebSearch budget exhausted mid-task.

John Sayles c.1633–1681 (sayles-austin — Austin 1887 primary-text agent)

Verdict: THE ROUND'S HEADLINE. Austin 1887, read directly from the archive.org scan, affirmatively names Catharine as daughter of John Sayles + Mary Williams (via the OLNEY entry), and quotes a 1670 deed in which John Sayles calls Roger Williams "my father-in-law." The Roger Williams descent is now anchored, not lore.

Verbatim transcriptions (quoted in full, as returned by the agent):

1. Olney entry (Austin p.353; djvu lines ~157594–157599, verified directly): William Olney (b.1663 Jun 25, Providence) married 1692 [Dec, exact day illegible in OCR] Catharine, described as "of John & Mary (Williams) Sayles."

2. Sayles entry, 1670 deed (djvu lines ~164863–164865, verified directly): in a deed dated 1670, Jun 24, selling a share of the island called the Vineyard, at Pawtuxet, Sayles's own recorded words describe the land as one "which my father-in-law Mr. Roger Williams gave me."

3. Addenda (djvu lines ~194626–194628): "SAYLES. 2d column. II. John. His wife was Elizabeth Olney, b.1666 Jan 31, of Thomas and Elizabeth (Marsh) Olney."

4. Addenda (djvu lines ~190622–190623): "SAYLES 2d column. He probably had also: VII. Deborah who m. Caleb Carr."

5. Carr addenda (djvu line ~186763): "CARR (Caleb) ... III. Caleb, his wife may have been daughter of John & Mary (Williams) Sayles, as he named a child Sayles Carr."

6. Tillinghast entry (djvu line ~175492): "of John & Isabel (Sayles) [Tillinghast]."

7. Greene entry (djvu line ~77547): "of Job & Phebe (Sayles) Greene."

8. Greene entries x3 (djvu lines ~139121, ~152936, ~170578): all reading "of Richard & Eleanor (Sayles) Greene."

9. Butterworth/Taber entry (djvu line ~97942): "...of Jobo & Mary (Williams) Sayles" attached to the wife of "II. John [Taber], d.1690 Dec." [given name illegible — possible unrecorded 8th daughter, or OCR garble]

10. Closing note on John Sayles: "He and his wife, and their son-in-law William Greene, are buried in the Easton Burial Ground, Middletown, R.I."

Does Catharine appear among John Sayles + Mary Williams's enumerated children? Plainly: NOT in Austin's own SAYLES entry — as far as the degraded OCR could be read, Catharine is not legible among the enumerated children there. This is NOT a confirmed negative on her parentage: Austin attests most of the daughters (Eleanor, Isabel, Phoebe) only via the families they married into, and Catharine follows exactly that pattern — Austin's OLNEY entry affirmatively enumerates her as "of John & Mary (Williams) Sayles." Net: Austin DOES name her as their daughter, under Olney rather than Sayles. The link is CONFIRMED-within-Austin; Austin-independent RI vital/probate corroboration (Arnold's Vital Record, Providence Early Records) is the remaining step before treating it as settled beyond a single 19th-c. compiler.

Siblings found (= Catharine's sibling set): Mary Sayles (b. 11 Jul 1652 – d. 1717; m. William Greene, then John Holmes) — CONFIRMED; John Sayles Jr. (b. 17 Aug 1654 – d. 2 Aug 1727; m. Elizabeth Olney — a SECOND Sayles-Olney intermarriage; Speaker of the House of Deputies 1705; will proved 21 Aug 1727) — CONFIRMED; Eleanor (m. Richard Greene, three Austin cross-refs; the WikiTree "twin of Catharine" detail is POSSIBLE only) — CONFIRMED; Deborah (m. Caleb Carr — Austin hedges "probably") and Isabel (m. John Tillinghast, poss. also Robert Hicks) and Phoebe (m. Job Greene) — PROBABLE; unnamed possible Taber-married daughter — POSSIBLE.

Parents found (John's own): Unnamed immigrant father who brought John to America in 1635 at ~age 2; "of Manchester, England" claim unconfirmed — POSSIBLE. QUARANTINE: the "John Sales m. Phillipa Sole/Soales" father identification was formally retracted by genealogists (confusion with an unrelated New Amsterdam John Sales, d.1645) — same-name trap, do not merge. Mother: none.

Key facts: b. c.1633 prob. Charlestown MA (Austin's "Providence" tag = residence convention, not birthplace); m. Mary Williams 1650; extensive Providence civic career 1653–1679 (Town Clerk, Treasurer, Deputy, Town Council); called "John Sayles, Sr." in a 1677 Grand Jury fine record (distinguishing him from son John Jr., not from his father); d. 1681, buried Easton Burial Ground, Middletown RI with wife and son-in-law — CONFIRMED (Austin + three independent secondary corroborations).

Top leads: (1) Arnold's Vital Record of RI + Providence Early Records for an Austin-independent Catharine anchor; (2) William Olney's parents via a cleaner Austin scan (HathiTrust) — check for double Sayles-Olney intermarriage; (3) reconcile the Taber-daughter fragment.

Dead ends: John Sayles's own parentage blocked (sibling-first method inapplicable to his generation); WebSearch session budget exhausted before the vital-records search.

Cross-agent page-number note: this agent cites Austin's Olney/Sayles entries at pp.353/370 (print pagination, matching the round-1 citation "p.370"); the williams-mary agent cites pp.723/757/837 (likely scan-leaf numbering of the same item) and inferred from that pagination that "p.370" was a mis-citation — that inference is probably wrong, but both agents independently verified identical CONTENT, so nothing substantive turns on it. The round-1 "b.1638" for Mary Williams is corrected to Aug 1633 either way.