 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 . 
