συμμοριάρχης
From LSJ
Περὶ τοῦ ἐπέκεινα τοῦ νοῦ κατὰ μὲν νόησιν πολλὰ λέγεται, θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → On the subject of that which is beyond intellect, many statements are made on the basis of intellection, but it may be immediately cognised only by means of a non-intellection superior to intellection
English (LSJ)
and συμμορ-ίαρχος, ὁ,
A president of a συμμορία, Hyp.Fr.148, PTeb.316.6, al. (i A.D.), PSI5.464.4 (iii A.D.).