Margaret ferch Llywelyn
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Margaret ferch Llywelyn was a daughter of Llywelyn the Great, and she married Walter de Clifford of the March - the writ-eating baron's heir - and mothered his heiress Maud. She stands beside her sister Gwladus Ddu in this ancestry: two daughters of the great prince, two roads by which his blood reaches this family. Whether her mother was Joan, King John's daughter, the sources decline to promise, and so does this record.
Research notes
✓ DOCUMENTED (web-confirmed 24 Aug 2026, standard accounts): daughter of LLYWELYN AB IORWERTH THE GREAT (I100196, existing) - ⭐ LOOP: wired into his existing family F99944 beside her sister Gwladus Ddu (same wife-less family convention: her mother is given as JOAN OF WALES, King John's daughter, in the standard accounts, but the maternity of Llywelyn's daughters is debated and stays note-only). A SECOND road to Llywelyn the Great. Added 24 Aug 2026.