Laetus
was one of the lieutenants of Septimius Severus in the campaign against the Arabians and Parthians, A. D. 195; and a few years afterwards (A. D. 199) gained great renown by his gallant and successful defence of Nisibis against a sudden attack headed by Vologaesus. Notwithstanding this good service, and the high reputation which he enjoyed both as a statesman and a general, he was put to death by the emperor, who had become jealous of his popularity with the soldiers. (D. C. 75.2, 9, 10.)
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.