Sibyl De Neufmarché Countess Of Hereford
- Born: Abt 1100, Brecon Castle, Breconshire, Wales
- Marriage (1): Miles FitzWalter in May 1121 in England
- Died: 24 Dec 1143, Hempstead, Gloucestershire, England aged about 43
- Buried: Hempstead, Gloucestershire, England
FamilySearch ID: 934P-KGV.
Sibyl married Miles FitzWalter, son of Walter De Pitres and Berta DeBallon, in May 1121 in England. (Miles FitzWalter was born about 1082 in Gloucester, Gloucestershire, England, died on 24 Dec 1143 in Forest of Dean, Gloucestershire, England and was buried about 28 Dec 1143 in Llanthony Prima Priory, Monmouthshire, Wales.)
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