Wiliam Herbert (c.1455-c.1490) mab Wiliam Herbert ap Wiliam ap Tomas, ail iarll Penfro ac yna iarll Huntington

Ffurfiau: Iarll Herbert, iarll Gwent, iarll Penbrwg, Herbart, Iarll Wiliam, Wiliam, iarll Penfro
Cyfeiriadau: 114.30n, 25.19, 25.53n, 25.61, 25.74

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Wiliam Herbert (c.1455-c.1490) mab Wiliam Herbert ap Wiliam ap Tomas; ail iarll Penfro ac yna iarll Huntington

Ffurfiau: Iarll Herbert, iarll Gwent, iarll Penbrwg, Herbart, Iarll Wiliam, Wiliam, iarll Penfro
Cyfeiriadau: 26.59, 26.66, 28.5, 28.56n

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