Wasn't there a scholarch with a Roman name? Source amnesia on that one.
I'm thinking you mean Popilius Theotimus. He's the only listed Scholarach with a Latin familiar name.
There also seems to be some suggestion that after somewhere between Apollodorus the "Tryant" and Zeno of Sidon there was a fracture of inheritance that lead to some level of involvement from characters like Diogenes of Tarsus, the Ptolemys of Alexandria, and perhaps Orion the otherwise unattested Epicurean. I believe that is speculative.