Walter Colvill , of Bytham, Sir Knight
Walter was born about 1222 in Bytham Castle, Bourne, Lincolnshire, England.  He died before September 2nd, 1277.

 Isabel (Elizabeth) de Albiniaco
Isabel (Elizabeth) de was born about 1229 in Muston, Grantham, Leicestershire, England.  Isabel (Elizabeth) de is no longer alive.

 Roger Colvill , of Bytham, Sir Knight
Roger was born about 1251 in Bytham Castle, Bourne, Lincolnshire, England.