Roger Colvill , of Bytham, Sir Knight
Roger was born about 1193 in Bytham Castle, Bourne, Lincolnshire, England.

 Beatrice de Stuteville
Beatrice de was born before 1195 in Brandesburton, Yorkshire, England.  She died after October 25th, 1265.

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