Margaret de Lacy, d. 1256, Lady of Dulek; m. as 1st wife, 14 May 1244 John de Verdun, b. c 1226, d. 21 Oct 1274, son of Theobald le Boteler and Rohese de Verdun. [Magna Charta Sureties]
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He [John de Verdun] married, 1stly, before 14 May 1244, Margery, 1st daughter of Gilbert DE LACY, of Ewyas Lacy, co. Hereford, by Isabel, daughter of Hugh (LE BIGOD), EARL OF NORFOLK, which Gilbert (who died v.p. between 12 August and 25 December 1230) was son and heir ap. of Walter de Lacy, Lord of Meath (who died s.p.m.s. shortly before 24 February 1240/1), to whom Margery was coheir. [Complete Peerage XII/2:246-8, (transcribed by Dave Utzinger)]