Key: S=as a Spouse, C=as a Child, P=as a Parent
Names | 
Born | 
Died | 
| GOODWIN | ||
| ArtemiseS | ||
| GORONWY AP TUDUR | ||
| Morfydd verch, of PenmynyddS | died Bef 1405 | |
| GORONWY FYCHAN | ||
| Madog ap, of Tref CastellP | born Abt 1292, Trecastell, Llangoed, Anglesey, Wales | |
| GREEN | ||
| Will E.S | ||
| GREY | ||
| ElizabethS | ||
| GRIFFITH | ||
| AliceC | born Abt 1482, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | |
| CatherineC | ||
| DorothyC | ||
| EdmundC | born Abt 1480 | |
| EdwardC | born 18 May 1511 | died 11 Mar 1540, Dublin, Leinster, Ireland | 
| EllenC | ||
| Gwilym apP | born Abt 1300 | died Aft 1353 | 
| JaneC | ||
| JanetC,C,C | born <Penrhyn, Llandegai, Caernarfonshire, > Wales | |
| PiersC | bur. Westminster Abbey, London, Midlesex, England | |
| Rhys, of Penrhyn, High Sheriff for Caernarvon (Sir)C | died 30 Jul 1580 | |
| SibellC,P,C,P,C,P,C,P | born Abt 1530, <Penrhyn, Llandegai, Caernarfonshire, > Wales | died Abt 1580 | 
| WilliamC | ||
| WilliamC | ||
| William, Lord of Penrhyn Castle, Chamberlain of North Wales (Sir)C | born Abt 1445, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died Abt 1539, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | 
| William, Lord of Penrhyn, Chamberlain of North Wales (Sir)C | born Abt 1480, Penrhyn, <Llandegai, > Caernarfonshire, Wales | died 1531 | 
| William, of Penrhyn, Chamberlain of North Wales (Sir)C | born Abt 1420, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died 1483, Austria-Hungary | 
| William, Hael (the Liberal) (Sir)C | born Abt 1445, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died Abt 1539, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | 
| GRIFFITH AP DAVID | ||
| Efa verch, of CochwillanS | ||
| GRIFFITH AP HEILYN | ||
| Gwilym apP | born Abt 1300 | died Aft 1353 | 
| GRIFFITH FYCHAN | ||
| WilliamC | born Abt 1420, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died 1483, Austria-Hungary | 
| GRIGS | ||
| RichardS | ||
| GRONEUY | ||
| Madoc apP | born Abt 1292, Trecastell, Llangoed, Anglesey, Wales | |
| GRONO AP TUDOR | ||
| Morvyn verchS | died Bef 1405 | |
| GRONW AP JEVAN | ||
| Lowry verch, of EifionyddS | ||
| GRONWY FYCHAN | ||
| Madog apP | born Abt 1292, Trecastell, Llangoed, Anglesey, Wales | |
| GRUFFUDD | ||
| Jonet ferchP | born Tahlenbont [Talybont?] | |
| GRUFFUDD AP GWILYM | ||
| Gwilym ap, of PenrhynC | born Abt 1365, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died 1431, Austria-Hungary | 
| Jonet verchC | born Abt 1376, Cetheiniog, Caernarfonshire, Wales | |
| GRUFFYDD | ||
| ElizabethC | born Cir 1508, <Penrhyn, Caernarfonshire, > Wales | |
| Gwilym ap, Lord of PenrhynC | born Abt 1365, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died 1431, Austria-Hungary | 
| Pyers, of PenrhynC | bur. Westminster Abbey, London, Midlesex, England | |
| Rhys ap, of Nant in TegeinglC | ||
| Robert ab, of CwchwillanC,C | ||
| William, of Penrhyn, Chamberlain of North Wales (Sir)C | born Abt 1480, Penrhyn, <Llandegai, > Caernarfonshire, Wales | died 1531 | 
| William, of Penrhyn, Chamberlain of North Wales (Sir)C | born Abt 1445, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died Abt 1539, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | 
| GRUFFYDD AP DAVID | ||
| Eva verch, of CwchwillanS | ||
| GRUFFYDD AP HEILEN | ||
| Gwilym ap, Lord of Penrhyn and CwchwillanP | born Abt 1300 | died Aft 1353 | 
| GUILYM | ||
| Gruffydd apC | born Abt 1322, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died 1405, Austria-Hungary | 
| GWILYM | ||
| Angharad verchC | born Abt 1407 | |
| Bleddyn apC | died Bef Oct 1406 | |
| Elin verchC | born Abt 1404 | |
| Griffith apC,C | born Abt 1322, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died 1405, Austria-Hungary | 
| Tudor Vychan ap, of Penmynydh, AngleseyC | ||
| William Fychan ap, of Penrhyn, 1st Chamberlain of North WalesC,C | born Abt 1420, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died 1483, Austria-Hungary | 
| GWILYM AP GRIFFITH | ||
| Ellin verch, of PenrhynC | born Abt 1404 | |
| GWILYM AP GRUFFYDD | ||
| Gwilym Fychan apC,C | born Abt 1420, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales | died 1483, Austria-Hungary | 
| GWILYM FYCHAN | ||
| Elen verchC | born Abt 1404 | |
| GWYN | ||
| Hugh ap, of Peniarth., High Sheriff of CarnaerfonshireS | born 1538 | died Aft 1611 | 
| JohnP | born Abt 1512, <Peniarth>, Caernarfon, Caernarfonshire , Wales | |
| GWYNN | ||
| HughS | born 1538 | died Aft 1611 | 
| SibylC | born betw 1566 and 1575, Peniarth, Caernarfon, Caernarfonshire, Wales | died Gadfa, Rhiwargor, Llanwyddn, Montgomeryshire, Wales |