William Bertram II
William was born in 1160 in Mitford, Northumberland, England.  He died at the age of 39 in 1199.

 Alice de Umfreville
Alice was born about 1164 in Prudhoe, Northumberland, England.

 Robert Bertram
Robert was born about 1190 in Mitford, Northumberland, England.

 Baron Roger Bertram II of Mitford
Roger was born in Mitford, Northumberland, England.  He died in 1242.