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Female Sibyl de Sully Click to view Sibyl de Sully in the family tree

Sibyl de was born in 1254 in Sully, Cardiff, Glamorganshire, Wales.  Sibyl de's father was Walter II de Sully and her mother was Mabel de Somery.  Her maternal grandparents were Roger de Somery , Lord of Dudley & Dinas Powis and Nichole d' Aubigny. She had a brother named Raymond de.  She was the younger of the two children.

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