Prŏbus, i, m.,
a Roman surname , Suet. Gram. 24.— Prŏbĭānus , a, um, adj., of or named from a Probus: purpura, Lampr. Alex. Sev. 40.
probus adj. with comp, estimable, good, serviceable, excellent, superior, upright, hones...
An Elementary Latin Dictionary