Joan Marshal 
Joan was born about 1208 in Pembroke, Pembrokeshire, England. Joan's father was William Marshal , 3rd Earl of Pembroke and her mother was Isabel de Clare , Countess of Pembroke. She had a brother and four sisters, named William, Sibyl, Maud, Eva and Isabel. She was the youngest of the six children. She died before November 1234.General Notes
He [Warin de Munchensy] married, 1stly, after her father's death (he died 14 May 1219), Joan, youngest of the 5 daughters of William (MARSHAL), EARL OF PEMBROKE, by Isobel, suo jure Countess of Pembroke, and, in her issue, coheir of her brother Anselm, EARL OF PEMBROKE. [Complete Peerage IX:421-2, XIV:493, (transcribed by Dave Utzinger)]
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