Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Iluro, ōnis, f., a town in Hispania Tarraconensis, the modern Maltaeo, Plin. 3, 3, 4, § 22.
Hence, Ilurensis, is, m., an inhabitant of Iluro, Inscr. Grut. 406, 9.