Question: When did Gwladys Ferch Dafydd's father die?
Sentence (from "Dafydd ap Gruffydd"): David, son of Gruffydd) (11 July  1238 – 3 October 1283) was Prince of Wales from 11 December 1282 until his execution on 3 October 1283 by King Edward I of England.
Relevant evidence: Yes