General Notes

Joan Ferrers, d. 19 Mar 1309/10; m. 1267 Sir Thomas de Berkeley, b. 1245, d. 23 July 1321, son of Maurice de Berkeley, b. 1218, d. 1281, and Isabel, daughter of Richard Fitz Roy, bastard son of King John of England.  [Magna Charta Sureties]

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He [Thomas de Berkeley] married, in 1267, Joan, da. of William (DE FERRERS), EARL OF DERBY, by his 2nd wife, Margaret, daughter and coheir of Roger (DE QUINCI), EARL OF WINCHESTER. She died in March 1309/10, and was buried at St. Augustine's, Bristol. He died 23 July 1321, at Berkeley, aged about 76.  [Complete Peerage II:127-8, (transcribed by Dave Utzinger)]