|Gwenllian verch Ieuan ap Howel
Gwenllian verch Ieuan ap Howel 1
Gwenllian married Ieuan ap Gruffydd of Llanuwchllyn and Cevn Trevlaith, son of Gruffydd ap Madog of Llan Uwch Llyn Tegid and Alice verch Bleddyn Vychan ap Bleddyn of Havod Unnos. (Ieuan ap Gruffydd of Llanuwchllyn and Cevn Trevlaith died in 1370 and was buried in Llanuwchllyn, Llanstundwy, Evionydd, Wales.)
Lloyd, Jacob Youde William, The History of the Princes, the Lords Marcher, and the Ancient Nobility of Powys Fadog (Vol. 6. London: Whiting & Co., 1887.), p. 121.