BD
Beatrice de Mandeville
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About
Beatrice de Mandeville, sister of the turbulent first Earl of Essex, carried the Mandeville claim into the Say family, and through her great-granddaughter Beatrice de Say it returned to crown the FitzPiers children as earls.
Research notes
BEATRICE DE MANDEVILLE, dau. of William de Mandeville, sister of GEOFFREY DE MANDEVILLE 1st EARL OF ESSEX (d.1144); wife of William de Say sr; the descent-carrier of the Essex earldom claim (Round; CP 'Essex'). Added 14 Sep 2026.