Firmus, Plotius
a contemporary and faithful friend of the emperor Otho. He had risen from the station of a common soldier to the offices of praepositus vigilibus and praefectus praetorii. During an insurrection of the soldiers he exerted himself in suppressing the revolt, by addressing each maniple separately, and causing large sums of money to be distributed among them. During the last struggle of Otho, Plotius Firmus implored him not to abandon his faithful army, and exhorted him to resume his courage. (Tac. Hist. 1.46, 82. 2.46, 49.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.