|Gwladys verch Ierworth ap Griffith
Gwladys verch Ierworth ap Griffith
Another name for Gwladys was Gwladys verch Iorwerth ap Gruffydd.
Source: Collections Historical & Archaeological Relating to Montgomeryshire, and its Borders, Vol. XIII. (London, 1880), "The Tanat Pedigree", p. 122
Gwladys married Iorwerth Voel ap Iorwerth Vychan, son of Iorwerth Vychan ap Iorwerth Gam ap Owain and Katherine verch Gruffydd ap Llywelyn.