Princess Lafracoth O'Brien

1076 - 1135  (59 years)

• Name	Lafracoth O'Brien  [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
  Title	Princess
  Birth	1076	Pembrokeshire, Wales
  Gender	Female
  Death	1135	Pembrokeshire, Wales
  Person ID	I10295	Clan Montgomery Society
  Last Modified	21 Aug 2026

  
  

  Father	King of Munster Muirchertach O'Brien,   b. 1030, Clare, Ireland d. 1119, Waterford, Ireland (Age 89 years)
  Relationship	natural
  Family ID	F22007	Group Sheet  |  Family Chart

  
  

  Family	Earl of Pembroke Arnulph Cimbricus Montgomerie,   b. 1048, Saint-Germain-de-Montgommery, Calvados, Normandy, France d. 1130, France (Age 82 years)
  Marriage	1101	Pembroke, Pembrokeshire, Wales   [6, 8]
  Children	+ 1. Phillip Cimbricus Montgomerie,   b. 1101, Pembrokeshire, Wales d. 1177, Thornton, Fife, Scotland (Age 76 years)  [Father: natural]  [Mother: natural] > 2. Alice Montgomerie,   b. 1115, Clare, Ireland d. Ireland  [Father: natural]  [Mother: natural]
  Family ID	F3300	Group Sheet  |  Family Chart
  Last Modified	21 Aug 2026

  
  

• Event Map

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  Birth - 1076 - Pembrokeshire, Wales Marriage - 1101 - Pembroke, Pembrokeshire, Wales Death - 1135 - Pembrokeshire, Wales  = Link to Google Earth

  
  

• Notes

  REF:ORIGIN AND HISTORY OF THE MONTGOMERYS by B.G.MONTGOMERY 1970 EDITION Daughter of the King of Munster, Ireland. Birth & Death dates from Darrell Wilson, CMS # 1609. Submitted by Michael A. Montgomery, CMS 1712, on 9/6/98. REF:ORIGIN AND HISTORY OF THE MONTGOMERYS by B.G.MONTGOMERY 1970 EDITION Daughter of the King of Munster, Ireland. Birth & Death dates from Darrell Wilson, CMS # 1609.

  
  

• Sources

  [S3151] Browning, Charles H, Americans of Royal Descent, (Name: Name: Porter and Coates; Location: Philadelphia, PA; Date: 1883;;), Americans_of_Royal_Descent_ed_by_C_H_Bro.;pdf Available on Google BooksPedigree XXX Campbell Pages 123-128. [S3163] thePeerage.com, (Name: thePeerage.com; Location: http://thepeerage.com;), Montgomerie Arnulph #266792http://thepeerage.com/p26680.htm#i266792. [S3437] Burke, Sir Bernard, Dormant, Abeyant, Forfeited, and Extinct Peerages, (Name: Burke's Peerage; Location: London, England; Date: 1883;), Available on CD Rom 7367 Notable British Families. [S3163] thePeerage.com, (Name: thePeerage.com; Location: http://thepeerage.com;), Montgomerie Alice #154870http://thepeerage.com/p15487.htm#i154870. [S3163] thePeerage.com, (Name: thePeerage.com; Location: http://thepeerage.com;), Fitzgerald Maurice #104684http://thepeerage.com/p10469.htm#i104684. [S3152] Montgomery, Bo-Gabriel de, Origin and History of the Montgomerys, (Name: William Blackwood and Sons, Ltd; Location: Edinburgh and London; Date: 1948;), Chapter (Page 101) Montgomerys, Earls of Eglinton. This book is available electronically on ancestry.com [S3153] Price, Lucy Montgomery Smith, The Sydney-Smith and Clagett-Price Genealogy, (Name: Shenandoah Publishing House; Location: Strasburg, Virginia; Date: 1927;), Book found on Heritage Questalso available on Ancestry.com. [S3154] Fraser, William, Memorials of the Montgomeries, Earls of Eglinton, Volume IPages 7-9I . ROBERT DE MUNDEGUMBRI, FIRST OF EAGLESHAME [1103-1178],. [S3147] Montgomery, Thomas Harrison, Genealogical History of the Family of Montgomery, (Name: Printed for Private Circulation; Location: Philadelphia; Date: 1868;), Pages 036-045 IX-XIIJohn Montgomerie through John Montgomery of EagleshamElectronic Book .PDF 170 pagesa_genealogical_history_of_the_family_of_.pdf. [S3397] Biographical Information from Wikipedia, (Name: Wikipedia; Location: en.wikipedia.org;), Montgomerie, Robert II (1022-1094)Accessed KRM 10 Nov 2020 11:16amhttps://en.wikipedia.org/wiki/Roger_de_Montgomeryen.wikipedia.org. https://en.wikipedia.org/wiki/Roger_de_Montgomery [S3436] De Boever, Luc, The Montgommerys from the Vikings to our Present Day, (Name: l'Imprimerie Moderne de Bayeux; Location: Bayeux, France; Date: 2018;), Part 2, Section 8Pages 35-40Roger II Montgomerie.