When did Henry assume the title of King of Ireland
" King of the English " , " Duke of the Normans " , " Duke of the Aquitanians " and " Count of the Angevins " remained in use until King John ascended the Throne in 1199 , when they changed to " King of England " , " Duke of Normandy " , " Duke of Aquitaine " and " Count of Anjou " , respectively .