MD
Margaret de Beaumont
d. 1235
Vitals
Died
1235
Family
Spouse
About
Margaret de Beaumont was a daughter of the Earl of Leicester and married Saer de Quincy, one of the Magna Carta sureties. Her inheritance made him an earl.
Research notes
✓ DOCUMENTED (web-confirmed 25 Jul 2026): MARGARET DE BEAUMONT (d.1235), younger sister and CO-HEIRESS of Robert de Beaumont, 4th Earl of Leicester; wife of Saer de Quincy, whose earldom of Winchester came of her Leicester inheritance. *** THE BEAUMONT LOOP: dau. of Robert de Beaumont, 3rd Earl of Leicester - her line rejoins the BEAUMONT Earls of Leicester ALREADY in the tree (up to Robert de Beaumont, Count of Meulan, I99760). Mother of Hawise and Robert de Quincy (our line). Direct ancestress. Added 25 Jul 2026.