Question: Æthelstan Half-King left his position and became a monk after the death of a king who ruled England starting which year ?
Sentence (from "Royal Arms of England"): This coat, designed in the High Middle Ages, has been variously combined with those of the Kings of France, Scotland, a symbol of Ireland, the House of Nassau and the Kingdom of Hanover, according to dynastic and other political changes occurring in England, but has not altered since it took a fixed form in the reign of Richard I (1189–1199), the second Plantagenet king.
Relevant evidence: No