Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Ărĭŏbarzānes, is, m., = Ἀριοβαρζάνης, a king of Cappadocia, Cic. Att. 5, 20; id. Fam. 2, 17; 15, 2.