The origo of C. Iulius P. f. Hor…………‥ Cornutus Tertullus, friend and colleague of the younger Pliny, has always been a matter of speculation. B. Stech thought he might have come from Africa; Professor Syme, observing the name of the dedicator of the stone which records Cornutus' career, C. Iulius Pla[n]cius Varus Cornutus, suggests Perge in Pamphylia. Professor Syme further remarks on the existence of a C. Iulius Cornutus at Perge, who set up a bilingual dedication to Nero. These names are also borne by C. Iulius Cornutus Bryonianus, ἀγωνοθέτης at the Varian games at Perge.
Groag remarked that one would not normally expect to find the praenomen of Cornutus Tertullus' father, Publius, coupled with the nomen Iulius. Cornutus Tertullus might, then, have been adopted, possibly by the C. Iulius Cornutus who set up the dedication to Nero: the gap in his nomenclature, as it appears in the inscription set up by C. Iulius Pla[n]cius Varus Cornutus, could have contained his original nomen.