These research papers are organized from ancient to recent, becoming more granular and specific to R-BY76660 O’Neill, and then to the ancestry of Jon Patraic Neill.
1
High Resolution Paternal Genetic History of Ireland and its Implications for Demographic History, by Tibor Fehér, 2024
Ireland’s origin traditions are evaluated with Y-DNA data encompassing more than half of all available Irish results aligning various septs, clans and surnames with more comprehensive tribal groupings. Discussion includes Connachta, Uí Néill and Cenél Eóghain, from which R-BY76660 O’Neill descends. Click Download PDF to take you to Academia.edu registration for download.
2
The Dál Cuinn. (Otherwise known as the Teóra Connachta and the Uí Néill). A Geographical and Genetic Description of the R-DF104 Clade, by Tim McEvoy (Gwinn), 2025
R-BY76660 is a branch of the Dál Cuinn, founded by Conn Cétchathach (trans., Conn ‘of the Hundred Battles’), a putative High King of Ireland, d. 186. His descendants were called the people of Connacht and the Uí Néill. The data means R-BY76660 O’Neill descends from key Irish figures Conn Cétchathach, Niall Noígíallach (‘of the Nine Hostages’), and Eóghan. Click Download PDF to take you to Academia.edu registration for download, used by Dal Cuinn Teóra Connachta and the Uí Néill FamilyTree DNA Project.
3
The Cenél Eóghain and the R-S588 Haplogroup, by Dwayne O’Neill and Edward Kane, 2025
Descended from the Dál Cuinn is a branch of the Uí Néill called Cenél Eóghain, or people of Eóghan (Owen). He was the son of Niall of the Nine Hostages, a putative High King of Ireland, and d. 465. R-BY76660 is a descendant lineage of Eóghan. Click Download PDF to take you to Google Drive, used by the Cenél Eóghain FamilyTree DNA Project.
4
Opposition of O’Neill Septs to the Earl of Tyrone in 1600 as Evidenced in Genealogical, Y-DNA and Archival Sources, by Jon Patraic Neill and Dwayne O’Neill, 2025
This study examines the opposition to the Earl of Tyrone from within the O’Neill kindred using historical evidence from royal pardons, land grants, manuscript sources, genealogical and Y-DNA data. R-BY76660 is possibly among the unidentified O’Neill septs, perhaps the one politically aligned to Shane ‘the Proud’, consistent with Neill tradition.
5
The O’Neill Connections to the Portglenone, Co. Derry Area, by Dwayne O’Neill, 2025
This paper provides an overview of the O’Neill families from the Portglenone, Co. Derry area. There are currently about 200 O’Neill individuals in the Portglenone area with about half in Portglenone itself and the other half southwest of it in Maghera, Knockcloghrim, Bellaghy. This area has a historically strong O’Neill presence, with testers from both Clandeboye’s Clandonnell (Donnell Donn of the Bann) R-FGC49744 and R-BY76660.
6
Haplotree FGC80436 and Signature and Branch Marker STRs, by Dwayne O’Neill, 2025
A simplified FGC80436 Haplotree is provided together with how signature and branch marker STRs augment it. Kits in the FGC80436 haplogroup have branches BY35717, BY11432 and BY137484, and include the O’Neill/Neill, Megraw/McGraw/McGrath, Trainer/Traynor, Devlin, Crossey/Cross and McAtee surnames. Download will take you to Google Drive, used by the Cenél Eóghain FamilyTree DNA Project.
7
Niall Glúndub’s Y-DNA and the Royal Succession AD 905, by Jon Patraic Neill, Dwayne O’Neill, and Stanley R. Megraw, 2024
Cenél Eóghain descendant branch R-BY55263 is associated with Niall Glúndub d. 919, High King of Ireland, though the DNA pathway of the royal succession from his era is still being vetted in academic and DNA project circles. Around AD 1500, R-BY55263 further branched into R-BY76660 O’Neill. The lineage is part of the Cenél Eóghain FamilyTree DNA Project and The Ancient and Royal Family of O’Neill FamilyTree DNA Project.
8
O’Neale in Fermanagh: Chronologies and Annotated Bibliography, by Jon Patraic Neill, 2025
Cenél Eóghain O’Neill R-BY76660 branch FTC78015 is represented by Jon Patraic Neill, whose family tradition claims ancestry that is both O’Neill and Quaker. This background research material pertains to the era when Gaelic Ireland fell circa 1600, when the branch first developed its unique identity.
9
Who Was Bryan McMelaghlin McArte O’Neale in Tyrone, Fermanagh, and Armagh?: Evidence from 1608—1611, by Jon Patraic Neill, 2025
Research material from “O’Neale in Fermanagh: Chronologies and Annotated Bibliography” indicated Bryan McMelaghlin McArte O’Neale as a potential, through inconclusive, ancestor of the Quaker Neill family. He appears from English sources to represent a previously unidentified branch of the O’Neill.
10
Oral Tradition of William John Neill (1875-1935) Family Origins, by Jon Patraic Neill, 2024.
Putting the oral tradition to paper was the first step taken in January 2024 before a full evaluation of the DNA and historical record. What was transmitted, and by whom and how, captures key elements that were later evaluated.
11
Thomas and Elizabeth Neill (flourished 1670), Quaker Family of Ireland, by Jon Patraic Neill, 2024 (2022)
Genealogical overview of the family of Thomas and Elizabeth Neill, who were early Quaker adherents in Fermanagh circa 1670. This ongoing work is being added here in WikiTree in collaboration with WikiTree Irish Quakers interest group.
12
Neill of Tullylish Parish in County Down, Deeds and Conveyances: Evidence from 1712—1870, by Jon Patraic Neill, 2025.
Research material from deed books pertaining to the Thomas and Elizabeth Neill family, providing a critical legal document referring to Thomas’s son John as both Neill and O’Neill. Includes information on other families in Ulster named Neill. See WikiTree instructions on Family Search Full Text Search.
13
Neill of Tullylish Parish in County Down, in the Belfast News-Letter: Evidence from 1738—1799, by Jon Patraic Neill, 2025
Research material from the local newspaper pertaining to the Thomas and Elizabeth Neill family, providing evidence of their residences in Moyallen and Ballymacanallen. Includes information on other families in Ulster named Neill.
14
Samuel Neill of Belfast and Ballymacarrett in PRONI Directories: Evidence from 1805—1890, by Jon Patraic Neill, 2025
This study on the presence of Samuel Neill (b. 1809, d. 1889) in Belfast directories firmly establishes his identity. Includes appendix of all Neill directory entries from 1805 to 1890.
15
Case Study of Irish Naming Custom: Thomas Neill Family, 1650—1900, by Jon Patraic Neill, 2025
The Thomas and Elizabeth Neill family did not follow the Irish custom for naming their sons, though a strong naming pattern exists with their descendants that combines elements of Quaker and Irish customs.
16
Chronicle of the Neill Family, by Jon Patraic Neill, 2019
A biographical account of the descendants of Samuel Neill (1809-1889) in Belfast and the United States is contained in Volume One. Part of a comprehensive, six-volume family history on the ancestors of Jon Patraic Neill, and their descendants, housed in the Library of Congress and other US research libraries. Family names Baab, Board, Book, Chambers, DueMong (Dumont, Duemong), Homan, Jacobs, Meinken, Neill, Whaley.
Cenel Eoghain O'Neill Working Papers 