This name probably derives from the Ancient Germanic name “otho”, from the Ancient Germanic “*audaz”, meaning “prosperity, fortune, riches, wealth, heiress” or from "*ōþ- > uodil", meaning “One's ancestral land, homeland, home, territory”. Audo and Odo were originally diminutives of all names beginning with the element “od-, ot-”. Otto, also spelled Othon (Greek: Ὄθων, βασιλεὺς τῆς Ἑλλάδος) (1815–1867), was a Bavarian prince who became the first modern king of Greece in 1832 under the convention of London. He reigned until his deposition in 1862. In 1832, Otto, Prince of Bavaria, was proclaimed king of Greece. He adopted the Greek spelling of his name, king Othon, as well as Greek national dress, and made it one of his first tasks as king to conduct a detailed archaeological and topographical survey of Athens, his new capital. He assigned Gustav Eduard Schaubert and Stamatios Kleanthis to complete this task. Saint Otto of Bamberg was a Medieval German bishop and missionary who, as papal legate, converted much of Pomerania to Christianity.
otto Danish, Dutch, English, Faroese, Finnish, German, Greenlandic, Norwegian, Old Danish, Old Norse, Old Swedish, Sami (lapps), Swedish