EF
Elen ferch Tomas ap Llywelyn
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Elen of Deheubarth brought to Glyndwr the blood of the princes of the south, so that he could claim descent from the royal houses of all Wales.
Research notes
✓ ELEN ferch TOMAS ap LLYWELYN, of the royal line of DEHEUBARTH; wife of Gruffudd Fychan II; mother of Owain Glyndwr (our line). Standard well-documented late-medieval Welsh genealogy per the cited authorities (web-confirmed 7 Aug 2026); contested rungs note-only, not hardened.