 He is cited in the later "Basilika", in which, on one occasion, his opinion is placed in opposition to that of Stephanus of Byzantium.Aside from this, there is little evidence in his surviving fragments to guess at the century in which he lived or suppose him to have been a contemporary of the Byzantine Emperor Justinian I (r. 527–565).Classical scholar Reitz, however, considered it certain that he was so, and accordingly marked his name with an asterisk in the list of jurists appended to his edition of Theophilus.