Otto, also spelled Otho (Greek:O Όθων, Βασιλεύς της Ελλάδος, O Óthon, Vasiléfs tis Elládos; 1 June 1815 – 26 July 1867), was a Bavarian prince who became the first modern King of Greece in 1832 under the Convention of London. He reigned until he was deposed in 1862.