Marmaduke de Twenge
Marmaduke was born about 1258 in Kilton Castle,Kilton,North Riding,Yorkshire,  England.

 Isabel de Ros
Isabel was born about 1270 in Igmanthorpe,Yorkshire,England.

 Katherine de Twenge
Katherine was born in 1311 in Kilton Castle,Kilton,North Riding,Yorkshire,  England.  She died before May 28th, 1374.

 Alice de Twenge
Alice was born in Kilton Castle,England.