Lewis & Short

Thŏrĭus, i, m., the name of a Roman gens; thus, Sp. Thorius Balbus, a tribune of the people, author of the agrarian law, called, after him, Lex Thoria, Cic. Brut. 36, 136; id. de Or. 2, 70, 284; cf. Orell. Index Legg. s. h. v.
Another Thorius, Flor. 3, 22, 6.