Robert married Lucy De Thweng before 29 Jan 1312/1313. Lucy (daughter of Robert De Thweng and Matilda Haunsard) was born on 24 Mar 1278/1279 in Kilton Castle, Brotton, Yorkshire, England; died on 8 Jan 1346/1347; was buried in Guisborough, Yorkshire, England. [Group Sheet] [Family Chart]