What is "athelm"

Athelm (or Æthelhelm; died 926) was an English churchman, who was the first Bishop of Wells, and later Archbishop of Canterbury. His translation, or moving from one bishopric to another, was a precedent for later translations of ecclesiastics, because prior to this time period such movements were considered illegal. While archbishop, Athelm crowned King Æthelstan, and perhaps wrote the coronation service for the event. An older relative of Dunstan, a later Archbishop of Canterbury, Athelm helped promote Dunstan's early career. After Athelm's death, he was considered a saint.