Family: Earl of Pembroke Arnulph Cimbricus Montgomerie / Princess Lafracoth O'Brien (F3300)
m. 1101-
Male
Earl of Pembroke Arnulph Cimbricus Montgomerie
Birth 1048 Saint-Germain-de-Montgommery, Calvados, Normandy, France 
Death 1130 France Burial Marriage 1101 [1, 2] Pembroke, Pembrokeshire, Wales [1, 2] Father 6th Count of Montgomerie Roger II Montgomerie | F143 Group Sheet Mother Mabel Talvas d'Alençon Bellême | F143 Group Sheet
Female
Princess Lafracoth O'Brien
Birth 1076 Pembrokeshire, Wales Death 1135 Pembrokeshire, Wales Burial Father King of Munster Muirchertach O'Brien | F22007 Group Sheet Mother
Male
+ Phillip Cimbricus Montgomerie
Birth 1101 Pembrokeshire, Wales Death 1177 Thornton, Fife, Scotland Burial Spouse Margaret FitzGospatrick Dunbar | F3373 Marriage Bef 1120 Dunbar, East Lothian, Scotland
Female
Alice Montgomerie
Birth 1115 Clare, Ireland Death Ireland Burial Spouse Maurice Fitzgerald | F19234 Marriage 1140 Windsor, Berkshire, England
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Sources - [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 - [S3154] Fraser, William, Memorials of the Montgomeries, Earls of Eglinton, Volume I Pages 7-9 I . ROBERT DE MUNDEGUMBRI, FIRST OF EAGLESHAME [1103-1178],.
- [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.