Padstow was originally named "Adelstow" after Athelstan who was reported by John Leland to be 'chief governor of privileges onto it'. "Adelstow" was commuted into "Petroc-stow", Petroc-stowe, or 'Petrock's Place', after the Welsh missionary Saint Petroc, who landed at Trebetherick around AD 500. After his death a monastery (Lanwethinoc, the church of Wethinoc, an earlier holy man) was established here which was of great importance until "Petroces stow" (probably Padstow) was raided by the Vikings in 981, according to the Anglo-Saxon Chronicle. Whether as a result of this attack or later, the monks moved inland to Bodmin, taking with them the relics of St Petroc. The cult of St Petroc was important both in Padstow and Bodmin.