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Gwladus ferch Llywarch
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Gwladus ferch Llywarch, first wife of Owain Gwynedd, was mother of Iorwerth Drwyndwn and so grandmother of Llywelyn the Great. Her father Llywarch and grandfather King Trahaearn ap Caradog are now in the tree above her.
Research notes
*** UPDATE - READ FIRST (8 Oct 2026): the floor/open statement below HAS BEEN LIFTED - see the new parent records for sources and grades. Opening kept as audit trail. *** ✓ standard: GWLADUS, dau. of Llywarch ap Trahaearn (OPEN ~); 1st wife of Owain Gwynedd (existing F99946); mother of Iorwerth Drwyndwn (our line - accepted reading). Added 14 Sep 2026.