Richard (Sir Knight) Bertram & Sibella de MITFORD 
They had a son named William I (Sir).
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Personal Details
Richard (Sir Knight) Bertram
Richard (Sir Knight) was born about 1045 in Dignan, Normandy, France. He died after 1086 in Mitford Castle, Morpeth, Northumberland, England.
Sibella de MITFORD
Sibella de was born about 1045 in Mitford Castle, Morpeth, Northu,berland, England. Sibella de is no longer alive.
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Children
William I (Sir) BERTRAM
William I (Sir) was born in 1080 in Mitford Castle, Morpeth, Northumberland, England. He died at the age of 70 in 1150.