Complex sentence: In the Domesday Book of 1086, Fisherton appears as "Fisertone" and is owned by Roger de Corcelle, also the owner of Curry Mallet in Somerset, under which it was held.
Split into simpler sentences: In the Domesday Book of 1086, Fisherton is spelt "Fisertone" and was then owned by Roger de Corcelle. He was also the owner of Curry Mallet in Somerset, under which his Wiltshire manor was held.