Madog was the son of Iowerth Voel ap Iowerth and Gwladys verch Iowerth. The date and place of his birth have not been found.
He had two marriages/partners. His first wife was Margred verch Llewellyn. They were married, but the date and place have not been found. They had no known children.
His second wife was Dyddgu verch Llewellyn. They were married, but the date and place have not been found. They had no known children.
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Iowerth Voel ap Iowerth |
Iowerth Vychan ap Iowerth |
Iowerth Gam ap Owain |
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Gruffydd ap Llywelyn |
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Iorwerth ap Gruffydd |
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Angharad verch Dafydd |