William Bulkeley Esq., of Cheadle, Constable of Beaumaris Castle
- Marriage (1): Elen verch Gwilym Fychan
Source: A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire by Sir [John] Bernard Burke, London, 1866, pp. 85-86:
:WILLIAM BULKELEY, Esq., of Cheadle, constable of Beaumaris Castle, Anglesey, in the reign of HENRY VI., who prevented the Duke of York, on his return from Ireland, from effecting a landing at Beaumaris. He m. Ellin, dau. (by his 2nd wife, Jonet, widow of Robert Paris, chamberlain of North Wales, and dau. of Sir William Stanley, Knt., of Hooton, co. Chester) of Gwylim ap Griffith, of Penrhyn, co. Carnarvon, and jure prima uxoris of Penmynydd, co. Anglesey, who d. 18th HENRY IV. (1440), derived from Ednyfed Vychan, Lord of Brynfenigle. By this lady he was father of a son, ROWLAND BULKELEY, Esq. of Beaumaris and Cheadle..."
William married Elen verch Gwilym Fychan, daughter of Gwilym ap Gruffydd Lord of Penrhyn and Jonet Stanley of Hooton. (Elen verch Gwilym Fychan was born about 1404.)