Baron Of Tonsburgh Eustace De Eustace De Baron Of Tonsburgh/Burgo 
Eustace De was born about 1005 in Tonsburgh, Normandy, France. Eustace De's father was [Earl Of Comyn] Jean Of Tonnbridge De Jean [Earl Of Comyn]/Conteville and his mother was Mrs. John Or Jean De Conteville. His paternal grandparents were Baudouin III Of Flanders [Count]/Flanders and Matilda Billung Of Saxony (Princess). He had two brothers and a sister, named Harlevin ( Herluin), Baldwin De and Oda De.General Notes
Eustace de Burgh, Baron Tonsburgh, in Normandy, younger brother of Harlowen de Burgh, the ancestor of the Lords Clanricarde, and the numerous families of De Burgh, Burke, and Bourke, had two sons, Serlo, and John, surnamed Monoculus, from having but one eye. [Sir Bernard Burke, Dormant and Extinct Peerages, Burke's Peerage, Ltd., London, 1883, p. 121, Clavering, Barons Clavering]
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