Charles I (German: Karl Franz Josef Ludwig Hubert Georg Otto Maria, Hungarian: Károly Ferenc József Lajos Hubert György Ottó Mária; 17 August 1887 – 1 April 1922) was Emperor of Austria, King of Hungary, and the ruler of the other states of the Habsburg monarchy from November 1916 until the monarchy was abolished in November 1918. He was the last of the monarchs belonging to the House of Habsburg-Lorraine to rule over Austria-Hungary.
https://en.wikipedia.org/wiki/Charles_I_of_Austria