Gwladys was the daughter of Iorwerth ap Gruffydd and Tangwystl verch Gruffudd. The date and place of her birth have not been found.
Her husband was Iowerth Voel ap Iowerth. They were married, but the date and place have not been found. Their four known children were Ednyfed Gam ap Iowerth Voel (?-?), Morgan ap Iorwerth Foel (?-?), Madog Llwyd ap Iowerth (?-?) and Gruffydd ap Iorwerth Voel (c1275-1313).
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Iorwerth ap Gruffydd |
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Angharad verch Dafydd |
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