Michael Matthew Groat PhD's Genealogical Database
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Gedcom Last Modified: December 14, 2025 00:59:10
Cormac mac Ailella Ó'Dúnlainge of Leinster
- Preferred Name: Cormac mac Ailella Ó'Dúnlainge of Leinster[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19]
- Alternate Name: Cormac " Ulfadha"
- Gender: M
- Burial: 535 in Cleitach, on the Boyne, Meath Ireland at LATI: N5.1178 LONG: E75.2863 with note: Modified | History
13 April 2015 by Ed McCrocklin
- Death: 535 in Diocese of Dublin, Leinster, Ireland at LATI: N3.3333 LONG: E6.25
- FSID: LHVM-4NQ
- LdsBaptism: 2 NOV 1932 with note: copied from merge
- Birth: 470 in Leinster, Ireland at LATI: N3.0833 LONG: E7 with note: GEDCOM data
- alt.birth: 480
- Notes:
=== Life Sketch ===
The Uí Ceinnselaig (also Uí Cheinnselaig, Anglicized as Kinsella), from the Old Irish "grandsons of Cennsalach", are an Irish dynasty of Leinster who trace their descent from Énnae Cennsalach, a supposed contemporary of Niall of the Nine Hostages. Énda was said to be a grandson of Bressal Bélach and a first cousin of Dúnlaing mac Énda Niada, eponymous ancestor of the rival Uí Dúnlainge.
The earliest associations of the Uí Ceinnselaig are with the region around Rathvilly, County Carlow, and the headwaters of the River Slaney, but in time the centre of their power was pushed southwards, later being found around Ferns, County Wexford, site of the monastery of the saint Máedóc of Ferns (d. 626 or 632).
In early times the kings of Leinster came from the Uí Ceinnselaig and the Uí Dúnlainge, but the Uí Dúnlainge came to dominate the kingship of the province, and after Áed mac Colggen (d. 738) it was three hundred years until the next Uí Ceinnselaig king of Leinster, Diarmait mac Máel na mBó (see list of Kings of Uí Cheinnselaig).
A branch of the family, the descendants of the Uí Ceinnselaig dynast Murchad mac Diarmata meic Máel na mBó, took the surname mac Murchada (from which modern Irish Mac Murchadha, anglicised as MacMurrough, Murphy, Morrow, etc.).[1][2][3] From this branch descended Domhnall Caomhánach, founder of the Caomhánach family.[4] Another segmant of the Uí Ceinnselaig family, the descendants of the Uí Ceinnselaig dynast Domnall Remar mac Mael na mBó, took the Irish surname Ua Domnaill.[3][5] Both branches—the Meic Murchada and the Uí Domnaill—were bitter rivals over the kingship of Uí Ceinnselaig.[3]
Notable kings of the Uí Ceinnselaig and related kindreds included:
Brandub mac Echach (died 603)[6]
Áed mac Colggen (died 738)
Diarmait mac Máel na mBó (died 1072)
Murchad mac Diarmata (died 1070)
Diarmait Mac Murchada (died 1171)
Aoife MacMurrough (died 1188)
Art Mór Mac Murchadha Caomhánach (died 1417)
Wikipedia
=== The Uí Ceinnselaig (also Uí Cheinnselaig ===
The Uí Ceinnselaig (also Uí Cheinnselaig, Anglicized as Kinsella), from the Old Irish "grandsons of Cennsalach", are an Irish dynasty of Leinster who trace their descent from Énnae Cennsalach, a supposed contemporary of Niall of the Nine Hostages. Énda was said to be a grandson of Bressal Bélach and a first cousin of Dúnlaing mac Énda Niada, eponymous ancestor of the rival Uí Dúnlainge.
The earliest associations of the Uí Ceinnselaig are with the region around Rathvilly, County Carlow, and the headwaters of the River Slaney, but in time the centre of their power was pushed southwards, later being found around Ferns, County Wexford, site of the monastery of the saint Máedóc of Ferns (d. 626 or 632).
In early times the kings of Leinster came from the Uí Ceinnselaig and the Uí Dúnlainge, but the Uí Dúnlainge came to dominate the kingship of the province, and after Áed mac Colggen (d. 738) it was three hundred years until the next Uí Ceinnselaig king of Leinster, Diarmait mac Máel na mBó (see list of Kings of Uí Cheinnselaig).
A branch of the family, the descendants of the Uí Ceinnselaig dynast Murchad mac Diarmata meic Máel na mBó, took the surname mac Murchada (from which modern Irish Mac Murchadha, anglicised as MacMurrough, Murphy, Morrow, etc.).[1][2][3] From this branch descended Domhnall Caomhánach, founder of the Caomhánach family.[4] Another segmant of the Uí Ceinnselaig family, the descendants of the Uí Ceinnselaig dynast Domnall Remar mac Mael na mBó, took the Irish surname Ua Domnaill.[3][5] Both branches—the Meic Murchada and the Uí Domnaill—were bitter rivals over the kingship of Uí Ceinnselaig.[3]
Notable kings of the Uí Ceinnselaig and related kindreds included:
Brandub mac Echach (died 603)[6]
Áed mac Colggen (died 738)
Diarmait mac Máel na mBó (died 1072)
Murchad mac Diarmata (died 1070)
Diarmait Mac Murchada (died 1171)
Aoife MacMurrough (died 1188)
Art Mór Mac Murchadha Caomhánach (died 1417)
Wikipedia
FamilySearch showed this additional information:
Name - Description: Cormac " Ulfadha"
FamilySearch showed this additional information:
Also Known As - Description: Cormac mac Ailella King of Kingdom of Leinster - Uí Dúnlainge
FamilySearch showed this additional information:
Burial - Date: 535 Place: Cleitach, on the Boyne, Meath Ireland
=== !SOURCE: "Royal Ancestors," PC #723. !P ===
!SOURCE: "Royal Ancestors," PC #723. !PROBLEM: With dates as shown, death is 107 years after christening. Research is needed to verify the dates.
=== From Ancestral File (TM), data as of 2 J ===
From Ancestral File (TM), data as of 2 January 1996. From Ancestral File (TM), data as of 2 January 1996.
=== Line 40 from GEDCOM File not recognizabl ===
Line 40 from GEDCOM File not recognizable or too long: NAME Cormac King Of /LEINSTER/ GIVN Cormac King Of Line 41 from GEDCOM File not recognizable or too long: NAME Cormac King Of /LEINSTER/ SURN LEINSTER Line 44 from GEDCOM File not recognizable or too long: SOUR @S01@ Line 62 from GEDCOM File not recognizable or too long: NAME Cormac King Of /LEINSTER/ GIVN Cormac King Of Line 63 from GEDCOM File not recognizable or too long: NAME Cormac King Of /LEINSTER/ SURN LEINSTER Line 66 from GEDCOM File not recognizable or too long: SOUR @S01@
=== Milner says that his father was Art the ===
Milner says that his father was Art the Melancholy
=== !NAME-PARENTS: Family Book; The Noble Li ===
!NAME-PARENTS: Family Book; The Noble Lineage of the Delaware-West Family of VA; 1958;116; Nelson Family History Center 1152 N Forest Mesa, AZ 85203;
=== King of Leinster from about 530 - 539. ===
King of Leinster from about 530 - 539. {MRDK} King of Leinster from about 530 - 539. {MRDK}
=== AKA-BIRTH: LDS Ancestor file - Doc. AFN0 ===
AKA-BIRTH: LDS Ancestor file - Doc. AFN000371 Aka: Cormac, King of Leinster Birth: About 460; ,Of,Leinster,Ireland
=== ALTERNATE DEATH DATE OF 0546 ===
https://www.geni.com/people/Cormac-%C3%93-D%C3%BAnlainge/6000000001452856681
=== King of Leister. ===
King of Leister.
=== King of Leinster, ===
King of Leinster,
=== !BAPTIZED 460 BY ST. PATRICK ===
!BAPTIZED 460 BY ST. PATRICK
=== From Ancestral File (TM), data as of 2 J ===
From Ancestral File (TM), data as of 2 January 1996.
=== !GENERAL:Ancestral File (R), Ancestral ===
!GENERAL:Ancestral File (R), Ancestral File (R), The Churc h of Jesus Christ of Latter-day Saints, Copyright (c) 1987 , June 1998, data as of 5 January 1998
=== Baptised by St. Patrick ===
Baptised by St. Patrick
=== 2 SOUR S003914 3 DATA 4 TEXT Date of ===
2 SOUR S003914 3 DATA 4 TEXT Date of Import: Oct 9, 2002 2 SOUR S229184 3 DATA 4 TEXT Date of Import: Dec 3, 2002 !NOTE: Humphrey 48.ged;;;;, Source Media Type: Other. Date of Import: Oct !NOTE: Corrie Hale Families 11-18-02.FTW;;;;, Source Media Type: Other. !NOTE: GEDCOM File : Corrie Hale Families 12-4-02.ged !BIRTH: Humphrey 48.ged;;;;, Source Media Type: Other. Date of Import: !BIRTH: Corrie Hale Families 11-18-02.FTW;;;;, Source Media Type: Other. !MARRIAGE: GEDCOM File : Corrie Hale Families 12-4-02.ged
=== !Name,Father,son-"The Genealogy of The L ===
!Name,Father,son-"The Genealogy of The Lord Jesus, Christ" Chart from FHL 20994 Item 6 (copied)
=== !#4904-pno#; !#(226-267); Ulfadha or (Ma ===
!#4904-pno#; !#(226-267); Ulfadha or (MacArt), Also King of Laighear;
=== THE PLANTAGENET ANCESTRY (GS NUMBER Q940 ===
THE PLANTAGENET ANCESTRY (GS NUMBER Q940 D2T) P.114; WURT'S MAGNACHARTA (GS NUMBER 940 D2T) VOL 3 P.428; ROYAL ANCESTORS OF MAGNA CHARTA BARONS BYCARR P. COLLINS, P.146;
=== Baptized by St. Patrick ===
Baptized by St. Patrick
=== M535.3
Cormac, son of Ailill, King of L ===
M535.3
Cormac, son of Ailill, King of Leinster, died. [Annals of the Four Masters I:179]
=== Other sources say he died in 567 ===
Other sources say he died in 567
=== ! From Helen Wilson Mossman Dunwell's Re ===
! From Helen Wilson Mossman Dunwell's Research. Royal Ancestors of Some L.D.S. Families by Michel L. Call. 1975, p.140. Baptised by St. Patrick of Leinster, Ireland
=== SOURCE: LDS Ancestral File and IGI recor ===
SOURCE: LDS Ancestral File and IGI records.
Preferred Parents:
Father: Ailill mac Dúnlainge of Leinster, b. ABT 435 in Leinster, Ireland d. ABT 527 in Leinster, Ireland
Mother: Etromma Ui Tellain, b. ABT 445 in Leinster, Ireland d. ABT 500 in Leinster, Ireland
Family 1: Eochaid mac Dunlainge Ui Eremoni, b. ABT 470 in of, Kingdom of Leinster (Ireland) d. in , , Kingdom of Leinster (Ireland)
- m. ABT 498 in of, Dublin, Kingdom of Leinster (Ireland)
- m. ABT 484 in Leinster, , Ireland
- m. ABT 499 in Of Leinster, Ireland
- Coirpri mac Cormac Ó'Dúnlainge, b. ABT 500 in Leinster, Ireland d. 546 in Leinster, Ireland
Sources:
- Title: Legacy NFS Source: Olioll mac Nathi -
Author: Irish Pedigrees or the Origin and Stem of the Irish Nation; John O'Hart {1923}, Page number: Pt III:iv:554
Note: Source Media Type: Book
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742978
- Title: Ireland, biography of Cormac Ulfada
Author: Attached 29 May 2015 by NinaGoodey
Publication: Name: http://interactive.ancestry.com/1981/31205_Vol4-01163/16578?backurl=http%3a%2f%2fsearch.ancestry.com%2f%2fcgi-bin%2fsse.dll%3fdb%3dDictNatBiogV1%26h%3d16578%26ti%3d0%26indiv%3dtry%26gss%3dpt%26ssrc%3dpt_t73384242_p34274761661_kpidz0q3d34274761661z0q26pgz0q3d32768z0q26pgplz0q3dpid&ssrc=pt_t73384242_p34274761661_kpidz0q3d34274761661z0q26pgz0q3d32768z0q26pgplz0q3dpid&backlabel=ReturnRecord;
- Title: Legacy NFS Source: Eochaid mac Dunlang -
Author: The Ancestry of Eve of Leinster (The Genealogist, 1980): Kelley
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742566
- Title: Legacy NFS Source: Cormac Cas King of Ireland -
Author: Ancestral File (R), The Church of Jesus Christ of Latter-day Saints, Copyright (c) 1987, June 1998, data as of 5 January 1998, Family History Library, 35 N West Temple Street, Salt Lake City, Utah 84150 USA
Page: Migrated from user-supplied source citation: urn:familysearch:source:2041640822
- Title: Legacy NFS Source: Olioll mac Nathi -
Author: Corpus Genealogiarum Hiberniae; M.A. O'Brien {1976}, Page number: LL316c56
Note: Entires listed as "000a" general are from Rawlinson 502, entries listed as LL000a00 are from the Book of Leinster
Source Media Type: Book
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742985
- Title: Legacy NFS Source: Cormac Camshron mac Nathi -
Author: Irish Kings and High Kings; Francis J. Byrne, {2001}, Page number: 290, Ui Cheinnselaig Kings of Laigin
Note: Source Media Type: Book
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742984
- Title: Legacy NFS Source: Cormac Cas King of Ireland -
Author: International Genealogical Index, The Church of Jesus Christ of Latter-day Saints, Family History Library, 35 N. West Temple Street, Salt Lake City, Utah 84150, USA, www.familysearch.org
Note: Record submitted after 1991 by a member of the LDS Church to request LDS temple ordinances.
Search performed using PAF Insight on 21 Apr 2005
birth: about 0460; Leinster Province, Ireland
Record submitted after 1991 by a member of the LDS Church.
Search performed using PAF Insight on 21 Apr 2005
Record submitted after 1991 by a member of the LDS Church to request LDS temple ordinances.
Search performed using PAF Insight on 21 Apr 2005
Record submitted after 1991 by a member of the LDS Church to request LDS temple ordinances.
Search performed using PAF Insight on 21 Apr 2005
Record submitted after 1991 by a member of the LDS Church to request LDS temple ordinances.
Search performed using PAF Insight on 21 Apr 2005
Page: Migrated from user-supplied source citation: urn:familysearch:source:2485740687
- Title: Legacy NFS Source: Cormac Cas King of Ireland - death:
Author: Ancestral File.LDS Church. Family History Library.
Note: death:
birth: about 0460; Ireland
Page: Migrated from user-supplied source citation: urn:familysearch:source:2198868384
- Title: Legacy NFS Source: Cormac Cas King of Ireland - birth:
Author: 13143.GED, Not Given
Note: birth:
Source Media Type: Other
death:
Source Media Type: Other
Source Media Type: Other
Page: Migrated from user-supplied source citation: urn:familysearch:source:2737222793
- Title: Legacy NFS Source: Cormac mac Ailill King of Laigin -
Author: Irish Kings and High Kings; Francis J. Byrne, {2001}, Page number: 289, Ui Dunlaing Kings of Laigin
Note: Source Media Type: Book
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742984
- Title: Legacy NFS Source: Eochaid mac Dunlang -
Author: Corpus Genealogiarum Hiberniae; M.A. O'Brien {1976}, Page number: 74
Note: Entires listed as "000a" general are from Rawlinson 502, entries listed as LL000a00 are from the Book of Leinster
Source Media Type: Book
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742985
- Title: Legacy NFS Source: Cormac mac Ailill King of Laigin -
Author: Irish Pedigrees or the Origin and Stem of the Irish Nation; John O'Hart {1923}, Page number: Pt III:iv:761
Note: Source Media Type: Book
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742978
- Title: https://www.geni.com/people/Cormac-%C3%93-D%C3%BAnlainge/6000000001452856681
Author: https://www.geni.com/people/Cormac-%C3%93-D%C3%BAnlainge/6000000001452856681, https://www.geni.com/people/Cormac-%C3%93-D%C3%BAnlainge/6000000001452856681open_in_new
Publication: Name: https://www.geni.com/people/Cormac-%C3%93-D%C3%BAnlainge/6000000001452856681;
- Title: Legacy NFS Source: Olioll mac Nathi -
Author: Ban Shenchus (The History of Women); Margaret E Dobbs, ed. {numerous volumns}, A record of the lives of hundreds of Irish women who lived prior to the 12th century, Page number: 331, 181:6, 213:5
Note: Source Media Type: Book
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742979
- Title: Legacy NFS Source: Cormac Ulfhada -
Author: Stirnet.com, Peter Barns-Graham, Chairman, Name: http://www.stirnet.com;, Page number: Irish02 Notes Peter Barns-Graham, Chairman, Stirnet.com (http://www.stirnet.com). Attached 17 June 2014 by Morgan J. Ririe Modified | History 17 June 2014 by Morgan J. Ririe Reason This Source Is Attached | Edit Migrated from user-supplied source citation: urn:familysearch:source:3246398939
- Title: Legacy NFS Source: Cormac Cas King of Ireland - christening: 0459;
Author: International Genealogical index, The Church of Jesus Christ of Latter-day Saints, Family History Library, 35 N. West Temple Street, Salt Lake City, Utah 84150, USA, www.familysearch.org
Note: christening: 0459;
Record submitted after 1991 by a member of the LDS Church.
Search performed using PAF Insight on 10 Feb 2007
Page: Migrated from user-supplied source citation: urn:familysearch:source:2485740689
- Title: Legacy NFS Source: Cormac mac Ailill King of Laigin -
Author: Annals of the Four Masters; John O'Donovan, ed., Dublin, 1848 - 51, (translation available at Corpus of, Page number: I:179
Note: Source Media Type: Book
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742980
- Title: Legacy NFS Source: Eochaid mac Dunlang -
Author: Genealogies from Rawlinson B502 , Page number: 342, 343 (original 124b)
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736743137
- Title: Legacy NFS Source: Cormac Camshron mac Nathi -
Author: Genealogies from Rawlinson B502 , Page number: 21 (original 117e)
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736743137
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