William Bertram
William was born about 1157 in Mitford Castle, Morpeth, Northumberland, England.  He died about 1199 in Mitford Castle, Morpeth, Northumberland, England.

 Alice de Umfreville
Alice was born about 1161 in Prudhoe, Hexam, Northumberland, England.

 Roger Bertram
Roger was born about 1180 in Mitford Castle, Morpeth, Northumberland, England.  He died before 1242 in Mitford Castle, Morpeth, Northumberland, England.