William I Bertram
William I was born about 1099 in Mitford, England.¹   He died in 1150.¹ 

 Hawise Balliol
Hawise was born about 1103 in Of Bywell, Nrthmb, England.¹   She died in Stainton, England.¹ 

 Roger I Bertram
Roger I was born in 1130 in Mitford, Eng..^1 1 

 Richard Bertram
Richard was born about 1134 in Of Barony, Mitford, Northumberland, England.¹   He died in 1176.¹