Richard de Clare, earl of Gloucester & Hertford (d.1262)
Biography
Richard was born on 4 August 1222. He was the eldest son of Gilbert de Clare, earl of Gloucester and of Hertford (d.1230), and Isabelle, daughter of William Marshal, earl of Pembroke. He had two brothers, William (d.1258) and Gilbert (b.1229), both unmarried, and two sisters, Amicia (d.1283), wife of Baldwin de Revières, earl of Devon (d.1245), and of Robert de Guines (d.1283), and Isabel (b.1226), wife of Robert (V) de Brus (d.1295), of Annandale. In 1238 Richard married Maud, daughter of John de Lacy, earl of Lincoln and with her had seven children: Gilbert de Clare (d.1295), who married Alice, daughter of Hugues de Lusignan, count of La Marche and Angoulême; Thomas, lord of Thomond (d.1287); Bogo de Clare (d.1294); Isabel (d.c.1271), who married Guillaume, marquess of Montferrat; Margaret (d.1312), who married Edmund of Cornwall; Rose (Rohese) (d. after 1299) who married Roger (III) de Mowbray, lord of Thirsk; Eglentina, who died shortly after her birth in 1257. Richard de Clare died at Eschemerfield, near Canterbury, on 15 July 1262 and was buried two weeks later at Tewkesbury Abbey. His widow, Maud, died in 1288 or 1289. M. Altschul, 'Richard de Clare, sixth earl of Gloucester and fifth earl of Hertford (d.1262)', ODNB; [http://www.oxforddnb.com/view/article/5448]