John de Thweng of Cornbrough

✓ John de Thweng, the first of Cornbrough; younger son of Marmaduke de Thweng of Kilton and Lucy de Brus, and brother of Marmaduke, 1st Lord Thweng (d. 1323). VCH Sheriff Hutton: 'Marmaduke de Thweng with his wife Isabel afterwards gave the manor of Cornbrough to his brother John. John de Thweng was a fugitive from justice in 1293 for the murder in this township of Roger Colstan, but he was in possession in 1300 and 1316. Edmund his son and heir, who died in 1344, was succeeded by his son, another John de Thweng, a minor.' Returned as a joint lord of the vill in 1316. His widow Joan held a third of Cornbrough in dower until her death 13 Jul 1346 (Cal. IPM VIII no. 659). Death date not found. Source: VCH Yorkshire North Riding vol. 2 (1923), 'Parishes: Sheriff Hutton' - Cornbrough manor (british-history.ac.uk/vch/yorks/north/vol2/pp172-187), read 27 Oct 2026; Source: Calendar of Inquisitions Post Mortem vol. VIII (Edward III) nos. 524 and 659 (archive.org calendarofinquis08grea), read 27 Oct 2026; Source: Complete Peerage, 1st ed. (G.E.C.), vol. VII p.400 'Thweng' (archive.org completepeerage07cokahrish), read 27 Oct 2026. [DIRECT ANCESTOR OF THE COMPILER: flag added 27 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]