Events
Date of Birth: unknown.
Place of Birth: unknown.
Date of Death: before 1268.
This date is given by the Complete Peerage (12/2:368).
Relationships
Father: William Mauduit (about 1195 - 1257) of Hanslope, Berkshire.
This relationship is given by Coss (ODNB) and by the Complete Peerage (12/2:368), which state that Isabel was the sister of William Mauduit, earl of Warwick.
Mother: Alice, the daughter of Waleran, earl of Warwick.
This relationship is given by Coss (ODNB) and by the Complete Peerage (12/2:368), which state that Isabel was the sister of William Mauduit, earl of Warwick.
Spouse: William (III) de Beauchamp (died 1269).
This relationship is given by Coss (ODNB) and by the Complete Peerage (12/2:368).
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project. Most information below comes from Cawley.)
William (IV) de Beauchamp, earl of Warwick, married Maud, daughter of Sir John fitz Geoffrey.
John de Beauchamp.
Walter de Beauchamp.
Joan de Beauchamp married Bartholomew de Sudeley.
Isabel de Beauchamp.
Margaret de Beauchamp married Hubert Hussey.
Sibylla de Beauchamp.
Sarah de Beauchamp married Richard Talbot.
References
Cawley, Charles. “William (IV) de Beauchamp” in Medieval Lands: A prosopography of medieval European noble and royal families.
Cokayne, George Edward, and Vicary Gibbs; et al. The complete peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, extant, extinct, or dormant [2nd ed.]. (London: St. Catherine Press, 1910-59).
Coss, Peter. “Beauchamp, William (IV) de, ninth earl of Warwick (c. 1238 - 1298)” in the Oxford Dictionary of National Biography (Oxford University Press, 2004).