Archbishop Athelm was born to [his father] Unknown Grandfather of Dunstan.
In 909 Archbishop Athelm was appointed Bishop Wells. The first Bishop of Wells.
Around 923 Archbishop Athelm was appointed Archbishop of Canterbury.
On 4th September 925 King Æthelstan I of England (age 31) was crowned I King Anglo Saxons by Archbishop Athelm, possibly at a site now known as the Coronation Stone, Kingston upon Thames [Map], or possibly in front of St Mary's chapel, which stood at the south-east of All Saint's Church, Kingston upon Thames [Map]. It was the first coronation in which the King wore a Crown rather than a helmet.
In 926 Archbishop Athelm died. He was buried in the Church of St John the Baptist, Canterbury.
After 926 the remains of Archbishop Athelm were moved to the North Transept, Canterbury Cathedral.
After 926 the remains of Archbishop Athelm were moved to the Chapel of St Benedict Lady Chapel, Canterbury Cathedral.