Margaret de Newburg 7th Countess of Warwick

From Medlands

MARGARET (-3 Jun 1253). She succeeded her brother in 1242 as Ctss of Warwick, suo iure. A writ dated 5 Feb "28 Hen III", after the death of Thomas Earl of Warwick, assigns two parts of his fees to "John de Plesseto and Margery his wife, sister and heir of the said earl" and one part to "Ela late his wife in dower"[1579]. A writ dated 7 Mar "47 Hen III", after the death of "John de Plessetis alias de Plascetis earl of Warwick", which notes that "Humphrey de Bohun gave the manor [of Bradenham, Buckinghamshire] in free marriage to Henry de Oylly with Maud his sister", names "a son Henry and two daughters" as their children, adding that "from the elder [daughter] issued Thomas earl of Warwick and one Margery" both of whom died childless[1580].

m firstly (before 23 Aug 1242) JOHN Marshal Marshal of Ireland, son of JOHN Marshal, Marshal of Ireland & his wife Aline de Rye (-[3 Oct/23 Oct] 1242).

m secondly (before 14 Sep 1243) as his second wife, JOHN du Plessis, son of --- (-25 Feb 1263, bur Missenden Abbey, Buckinghamshire). He succeeded as Earl of Warwick, de iure uxoris, using the title from Aug 1247 until his death[1581]. A charter dated 3 Feb 1247 records a final agreement between "Johannem de Plesseto" and "Willelmum Mauduyt et Aliciam uxorem eius", relating to "maneriis Warwyk…pertientibus ad comitatum Warr, unde Thomas frater Margerie uxoris eiusdem Johannis, cuius heres ipsa est", agreeing the succession of the latter if the wife of the former died without heirs[1582]. A writ dated 7 Mar "47 Hen III", after the death of "John de Plessetis alias de Plascetis earl of Warwick" records "Hugh his son, aged variously stated as 24 and more, 25 or more and 26, is his heir"[1583].

https://en.wikipedia.org/wiki/Margaret_de_Beaumont,_7th_Countess_of...