Or Gollwyn. Founder of the 5th Noble Tribe of North Wales. Lord of Eifionydd, Ardudwy and part of Lleyn (formerly in Merionethshire and Caernarvonshire now Gwynedd). Descended from Urien Rheged King of North Britain and Coel Hen supposedly the last Roman Dux of Britain.

His grandchildren are said to “have flourished in the reign of Gryffydd ap Cynan”.

As per Pennant:

Descendants Extant in the Male line

Williams of Abererch

Descendants Extinct or in the female line

Bodwra of Bodwra
Bodvels of Madryn
Jones of Castell March
Wynn of Pant Du
of Pennardd or Penarth (Jones-Parry of Madryn are .descendants through Ellin Wynn, heiress)
of Bodsanan
of Pen y Berth
Pen Coed
Lloyd of Bodfan
of Gardd
of Dol y Penrhyn
Rhydderchs of Tregaenan


As per other sources in the male line:

Lloyd of Llanfair Fawr
Newborough of Glynllyfon (Wynne)
Vaughan of Berkin
Vaughan, Earls of Lisburne (of Trawsgoed)
Madryn of Madryn
Owen of Plas Du
Evans of Tan y Bwlch
Ellis of Bronbwll and Ystumlyn
Sir M Caradoc
Prytherch of Tregnian or Tegowan
Vaughan of Aberkain


Plus the Bodwells in the US and many other families including it is thought Jones of Llay.