King of Munster Muirchertach O Brien
1030 - 1119 (89 years)-
Name Muirchertach O Brien [1, 2, 3, 4, 5] Title King of Munster Birth 1030 Clare, Ireland 
- Munster
Gender Male Occupation Moncarch of Ireland [1] Death 1119 Waterford, Ireland [1] - Lismore
Person ID I7903 Presidents and Royalty Last Modified 8 Jun 2025
Father Toirrdelbach O Brien, b. 1009, Clare, Ireland d. 14 Jul 1086, Clare, Ireland (Age 77 years) Relationship natural Mother Derbforgaill Na Ossory, b. 1000, Ireland d. 1098, Ireland (Age 98 years) Relationship natural Family ID F5168 Group Sheet | Family Chart
Family Dubhchobhleigh Na Ossory, b. 1050, Ossory,,,Ireland d. 1098 (Age 48 years) Children > 1. Princess Lafracoth O'Brien, b. 1076, Pembrokeshire, Wales d. 1135, Pembrokeshire, Wales (Age 59 years) [Father: natural] [Mother: natural]Family ID F5169 Group Sheet | Family Chart Last Modified 8 Jun 2025
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Event Map 
Birth - 1030 - Clare, Ireland 
Death - 1119 - Waterford, Ireland = Link to Google Earth
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Sources - [S776] 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 Books Pedigree XXX Campbell Pages 123-128.
- [S777] Montgomery, Thomas Harrison, Genealogical History of the Family of Montgomery, (Name: Printed for Private Circulation; Location: Philadelphia; Date: 1868;), Electronic Book .PDF 170 pages a_genealogical_history_of_the_family_of_.pdf.
- [S724] thePeerage.com, (Name: thePeerage.com; Location: http://thepeerage.com;), Montgomerie Arnulph #266792 http://thepeerage.com/p26680.htm#i266792.
- [S1054] 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.
- [S872] 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
- [S776] 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 Books Pedigree XXX Campbell Pages 123-128.