Johannes I, Emperor of the Danes, King of Germany and Lombardy, Lord-Protector of Rome (1007 - 1070), more commonly referred to by his Latin name of Johannes Rex (King John) or sometimes John the Great (Johann Maektigge), was the first king of the Danish-ruled Johannine Empire. This was an assortment of lands assembled under Johannes and his successors between the crowning of Johannes I as King of the Danes in 1036 at Askevik and the assassination of his great-grandson, Johannes IV, in 1140.