Charles (Karl Franz Joseph Ludwig Hubert Georg Otto Marie von Habsburg-Lothringen) (English: en) (17 August 1887 – 1 April 1922) (Hungarian: IV. Károly or Károly Ferenc József) was (among other titles) the last ruler of Austria-Hungary as a unified empire. He reigned as Charles I as Emperor of Austria and Charles IV as King of Hungary from 1916 until his death in 1922. Following his beatification, he has become commonly known as Blessed Charles.