Oclatinia gens

The gens Oclatinia was an obscure Roman family of imperial times. It is best known from a single individual, Marcus Oclatinius Adventus, consul for the second time in AD 218, together with the emperor Macrinus. From various sources, we know that he was procurator Augustorum under Septimius Severus in AD 202, and governor of Britain between 205 and 207.

Origin
The nomen Oclatinius clearly shares a root with Oclatius, borne by Tiberius Oclatius Severus, consul suffectus in AD 160, and is perhaps an orthographic variant of Ocratius, part of a class of gentilicia formed using the suffix -atius, derived from place-names ending in -as or -atis, or passive participles ending in -atus.