Malmesbury was founded as a Benedictine monastery around 676 by the scholar-poet Aldhelm, a nephew of King Ine of Wessex. In 941 AD, King Athelstan was buried in the Abbey. Æthelstan had died in Gloucester in October 939. The choice of Malmesbury over the New Minster in Winchester indicated that the king remained an outsider to the West Saxon court

By the 11th century it contained the second largest library in Europe and was considered one of the leading European seats of learning. The Abbey was the site of an early attempt at human flight when, during the early 11th century, the monk Eilmer of Malmesbury attached wings to his body and flew from a tower. Eilmer flew over 200 yards (200 m) before landing, breaking both legs. He later remarked that the only reason he did not fly further was the lack of a tail on his glider. The 12th-century historian William of Malmesbury was of the community.