Patrobas in the Bible Encyclopedia - ISBE
pat'-ro-bas (Patrobas): The name of a member of the Christian
community at Rome to whom Paul sent greetings (Rom 16:14). The
name is an abbreviated form of "Patrobius." There was a
wealthy freedman of Nero of the same name who was put to death
by Galba (Tacitus, History i.49; ii.95). The Patrobas of Paul
may have been a dependent of his.