Messalla
12. M. Valerius Messalla, M. F., consul in A. D. 20, moved at the first meeting of the senate under Tiberius, in A. D. 14, that the oath to the emperor (sacramentum) should for the future be repeated annually instead of at intervals of five or ten years (Tac. Ann. 1.8, 3.2; Fasti.)
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.