Maud was the daughter of Gruffudd Gryg ap Ieuan and Angharad verch Ieuan. The date and place of her birth have not been found.
Her husband was Rhydderch ap Evan Llwyd. They were married, but the date and place have not been found. Their three known children were Tanglwst verch Rhydderch (?-?), Gwenllian verch Rhydderch (?-?) and Gwerful verch Rhydderch (?-?).
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