Sir Robert De Thwenge
Sir Robert was born in 1197 in Thweng, Durham, England.  He died at the age of 50 in 1247 in Thweng, Durham, England.

 Matilda De Kilton
Matilda was born about 1205 in Thweng, Durham, England.  She died in June 1279 in Thweng, Durham, England.

 Marmaduke de Thwenge
Marmaduke was born in 1225 in Castle Kilton, Yorkshire, England.  He died at the age of 54 in December 1279.

 Cecilia De Thwenge
Cecilia was born about 1225 in Thweng, Durham, England.

 Robert de Thwenge
Robert was born about 1232 in Thweng, Durham, England.