Robert De Thweng
Robert was born about 1255 in Kilton Castle, Cleveland, Yorkshire, England.  He died in 1284 in Kilton Castle, Cleveland, Yorkshire, England (Dvp & Dspm).

 Matilda Hansard
Matilda was born about 1259 in Yorkshire, England.  She died after 1284.

 Lucy De Thweng
Lucy De was born on March 24th, 1279 in Kilton Castle, Cleveland, Yorkshire, England.  She died at the age of 67 on January 8th, 1347 in Guisborough Priory, North Ride Yorkshire, England.