The Heretow 'Oshenna (IPA: ['ɦɑ:ʁtoʊ̯ ɔ̯o'ʃɛnʲɑ] or ['ɦɛʁɛtoʊ̯ ɔ̯o'ʃɛnʲɑ], literally: Duke of Oceana) is a hereditary title used in the Lovian state of Oceana. The incumbent carrier of this title is Oos Wes Ilava. The title became official on July 26, 2013, after a state-wide referendum was held. In total, 8,611 votes were cast, of which 7,932 (92,1%) in favor of the Heretow and 679 (7,9%) contra.