Gredyw was the son of Ithel Hael de Cornouaille but his mother is unknown. The date and place of his birth have not been found.
Ithel Hael de Cornouaille |
Hoël I Mawr de Cornouaille |
Budig ap Erich |
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Elen verch Gwyrlys de Tintagel |
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saint Alma Pompea de Domnonée |
Riothamnus de Domnonée |
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