JD
Joan de Munchensi
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About
Joan de Munchensi (c.1230-1307), the great heiress through whom Pembroke came to the Valences: only surviving child of Warin de Munchensy of Swanscombe by Joan Marshal, one of the five daughters of William Marshal, 1st Earl of Pembroke.
Research notes
✓ DOCUMENTED (Wikipedia; web-confirmed 8 Aug 2026). Her Marshal descent is now VERIFIED and WIRED (CP1 vol. VI PEMBROKE p.205, supplied by Aynsley 8 Aug 2026): her mother Joan Marshal (I100636) was the 5th and youngest Marshal coheir. Added 8 Aug 2026.