AG
Angharad ferch Gruffudd
1175–?·Penrhyn, Llandygai, Caernarvonshire, Wales
AB
Annes verch Bleddyn
1260–?·Penrhyn, Caernarvonshire, Wales
GH
Gruffudd ap Heilyn
1275–1340·Penrhyn, Llandygai, Caernarvonshire, Wales
WG
William Griffith
1447–1506·Penrhyn Castle, Caernarvonshire, Wales
EG
Elizabeth Griffith
1508–1573·Penrhyn, Carnarvon, Wales
DG
Dorothy Griffith
1515–1590·Penrhyn, Caernarfonshire, Wales
GW
Gwen Williams
1660–1701·Penrhyn, Caernarvonshire, Wales
SB
Sir John Williams, 3rd Bt.
1663–1682·Penrhyn, Wales
SB
Sir Griffith Williams, 4th Bt.
1666–1684·Penrhyn, Caernarfonshire, Wales
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Sir Hugh Williams, 8th Baronet
1718–1794·Penrhyn, Wales
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Sir Robert Williams, 9th Baronet
1764–1830·Penrhyn, Wales