Constantine V of Britain

Constantine V (about 1086 - 19/23 June 1134) was the King of Britain for 1 year (1133-1134) by usurpation, he was a former Byzantine Empire resident, Constantine was believed to have been the son of John Doulimos (1053-1136), a powerful autocrat in the empire.

Constantine was believed to have been murdered for usurping the throne.