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 "Æthelstan Half-King"): Many of Æthelstan's close relatives were also involved in important affairs, but soon after the death of king Eadred in 955, he left his position and became a monk at Glastonbury Abbey.
Relevant evidence: Yes