He [John le Scot] married, 1222, Helen, daughter of LLEWELLYN AP IORWERTH, PRINCE OF NORTH WALES, and by her is suspected to have been poisoned. He died s.p., at Darnall, co. Chester, very shortly before 6 June 1237, and was buried at St. Werburg's, Chester, leaving the two daughters of his eldest sister and his three surviving sisters, as his coheirs, but in 1246 the Earldom of Chester was annexed to the Crown "lest so fair (preclara) a dominion should be divided (inter colas feminarum) among women." His widow married, before 5 December 1237, Robert DE QUINCY (youngest son of Saher, Earl of Winchester), who died s.p.m., August 1257. She died 1253, before 24 October. [Complete Peerage III:169-70, (transcribed by Dave Utzinger)
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Received manors of Bidford, Warwickshire & Suckley, Worcestershire as maritagium.