Lewis & Short

Sŭbur, f., a town in Spain, on the river Rubricatus, perh. the mod. Villa Nuova, in Castile, Mel. 2, 6; Plin. 3, 3, 4, § 21.
Hence, Sŭbūrĭtāni, ōrum, m., the inhabitants of Subur, Inscr. Grut. 414, 3.