APOLLODORUS [the Epicurean]
APOLLODORUS [of Athens]
Thank you for helping with this. We know Diogenes Laertius references as his source "Apollodorus of Athens" (7.181) and "Apollodorus the Epicurean" (10.13). This itself might be the source of the scholastic tradition of them being two different men.
Given my arguments above, I do not think two different epithets certainty means two different men. Epithets in Diogenes Laertius are not consistent or systematic.
And at 7.181, it is "Apollodorus of Athens" defending Epicurus, quite like an "Apollodorus the Epicurean" would be expected to do!
"Apollodorus of Athens, in his "Collection of Doctrines" wanting to show that the works of Epicurus (written by his own efforts and not copied) were innumerably more numerous than the books of Chrysippus, said in these very words: 'indeed if someone were to remove from Chrysippus' books all that was cited from elsewhere – his papyrus would be left empty!'"
“APOLLODORUS [of Lampsacus] [1] (fourth century BC)
I may be overlooking something, but I am not finding him.