. "0260Z"^^ . "0253Z"^^ . "Roman emperor" . . "Valerian (/v\u0259\u02C8l\u026A\u0259ri\u0259n/; Latin: Publius Licinius Valerianus Augustus; 193/195/200 \u2013 260 or 264, also known as Valerian the Elder, was Roman Emperor from 253 to 260 AD. He was taken captive by Sassanian 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."@en . "(as emperor)"@en . . "Publius Licinius Valerianus (from birth to accession);"@en . . . . . . "Valerian"@en . "0200Z"^^ . "Imperator Caesar Publius Licinius Valerianus Augustus"@en .