Gwladys

Saint Gwladys ferch Brychan or St Gladys, daughter of King Brychan of Brycheiniog, was the queen of the saint-king Gwynllyw Milwr and the mother of Cadoc "the Wise", whose vita may be the earliest saint's life to mention Arthur. Gwladys's other children were Cynidr, Bugi, Cyfyw, Maches, Glywys II and Egwine.