Bede describes the invasion of the island in 686 (noting that Bede was writing fifty years later, and some of his dates are considered approximate) by Caedwalla, a Wessex King. He writes: "After Caedwalla had obtained possession of the kingdom of the Gewissae, he took also the Isle of Wight, which till then was entirely given over to idolatry, and by merciless slaughter, endeavoured to destroy all the inhabitants thereof, and to place in their stead people from his own province; binding himself by a vow, though it is said that he was not yet regenerated in Christ, to give the fourth part of the land and of the spoil to the Lord, if he took the Island. He fulfilled this vow by giving the same for the service of the Lord to Bishop Wilfrid...". Arwald died in action, and his nephews were betrayed to Caedwalla and executed. Bede adds that 300 "hides" (each being the land that could support a family) were given to the Church.