Edgar I of England, also known as Edgar the Peaceful, was a king who ruled from 959 to 975 AD. He was the son of Edward the Elder and became king after the death of his half-brother, Edwy. Edgar is known for consolidating the English kingdom and promoting peace and stability during his reign. Under Edgar's rule, England experienced a period of relative tranquility, which allowed for the strengthening of royal authority. He was also notable for his support of the church and the promotion of monastic reforms, which helped to enhance the spiritual and cultural life of the kingdom.