Alan De Bulmer
Alan was born in 0995 in Bulmer, Yorkshire, England.¹   He died in Y.¹ 

 Bertram De Bulmer
Bertram was born in 1100 in Brancepeth, Durham, England.¹   He died at the age of 66 in 1166 in Brancepeth, Durham, England.¹ 

 Robert Bertram
Robert is no longer alive.