Sir Marmaduke de Thwenge, Knt, b and bap at Kilton Castle, 1225; of Kilton and Kirkleatham; acquired the manor of Danby in right of his wife; in 1257 obtained a charter of free warren in his manors of Thwing, Kirkleatham, Kilton, and Moorsom, besides weekly markets at his manors of Lund, Thwing and Coatham, with yearly fairs there; d Dec 1279; bur in the chancel of Guisborough priory
Married to Lucia, dau, & coh of Peter de Brus II, lord of Skelton and Helewise, eldest dau of Peter Merley, sister & coh of her brother Peter de Brus III; mar 27 Sept. 1257(transcript says 1237) had Brotton, Danby, and other lands as her share d 1272 On the death of her brother Peter she obtained the patronage of Guisborough priory jointly with her sister Agnes, wife of Walter de Fauconbergh