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Female Joan de Ferrers Click to view Joan de Ferrers in the family tree

Joan de was born about 1233 in Derby, Derbyshire, England.  Joan de's father was William III de Ferrers , 5th Earl of Derby and her mother was Sibyl Marshal.  Her paternal grandparents were William II de Ferrers , 4th Earl of Derby and Agnes of Chester , Lady of Chartley; her maternal grandparents were William Marshal , 3rd Earl of Pembroke and Isabel de Clare , Countess of Pembroke. She had four sisters named Isabel de, Agnes de, Maud (Matilda) de and Eleanor de.  She was the youngest of the five children. She had two half-brothers and four half-sisters, named Robert de, William IV, Elizabeth de, Joan de, Agnes de and Berta de.  She died before October 1267 in Addington, Surrey, England.


Joan de's first family with John I de Mohun , of Dunster, Sir Knight

‌Joan de and John I de were married in a religious ceremony about 1245.  They had a son named John II de.


Joan de's second family with Robert de Aguillon , of Watton & Addington, Sir

‌Joan de and Robert de were married in a religious ceremony before August 1256 in 2nd husband 1st wife.  They had a daughter named Isabel de.

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