Edmund Deincourt of Thurgarton, Notts, Blankney, co. Lincoln, &c., s. and h. of John D. of the same, suc. his father before 1257; served in the wars in France and Scotland; was, with about 60 others, sum. 8 June 1294, to attend the King wheresoever he should be, and was sum. to Parl. as a Baron (LORD DEINCOURT), by writs, 6 Feb. (1298/9), 27 Ed. I, to 3 Dec. (1326), 20 Ed. II. He was one of the Barons who signed the letter to the Pope, 12 Feb. 1300/1, as "Edm'us de Eyncourt, D'n's de Thurgeriton." Being anxious to perpetuate his name and arms, which were likely to perish in the person of Isabel, da. of Edmund Deyncourt, late his "heir apparent" (and, consequently either a son or grandson), he obtained the royal lic. 23 Feb. (1313/4), 7 Ed. II, to settle his estates after his death on William and John Deyncourt (both sons of John Deyncourt) in tail male respectively with rem. to his own right heirs. He d. (1327), 1 Ed. III, when, if the said Isabel was then living, she would have been (according to the present theory) the heir to any Barony in fee cr. by the writ of 1299.
