Gruffydd ap Llywelyn – Wikipedia
Two deaths of interest on this day in history
1063 – Gruffydd ap Llywelyn, King of Gwynedd https://en.wikipedia.org/wiki/Gruffydd_ap_Llywelyn
1447 – John Holland, 2nd Duke of Exeter (b. 1395) He was related to the English royal family and was an important commander during the 100 Year War. https://en.wikipedia.org/wiki/John_Holland,_2nd_Duke_of_Exeter