Valerian (Latin: Publius Licinius Valerianus Augustus; 193/195/200 260 or 264), also known as Valerian the Elder, was Roman Emperor from 253 to 260. He was taken captive by Persian king Shapur I after the Battle of Edessa, becoming the only Roman Emperor who was captured as a prisoner of war, causing instability in the Empire. Unlike the majority of the pretenders during the Crisis of the Third Century, Valerian was of a noble and traditional senatorial family. Details of his early life are elusive, but for his marriage to Egnatia Mariniana, who gave him two sons: later emperor Publius Licinius Egnatius Gallienus and Valerianus Minor. He was Consul for the first time either before 238 as a Suffectus or in 238 as an Ordinarius. In 238 he was princeps senatus, and Gordian I negotiated through him for Senatorial acknowledgement for his claim as emperor.