====================================================== Imperator Flavius Valentinianus the Elder was born in 321 in Cibalis (modern Vinkovci), Pannonia. He was the son of Gratianus Valentinianus the Elder. He married Marina Severa circa 345; His 1st. He married Justina, daughter of N. N. Justis, before 350; His 2nd. Her 2nd. Emperor, between 364 and 15 November 375. He set up residence, from which he directed operations against the invading Alemanni, in October 365 in Paris, France. He moved, to be in closer communication with his general Theodosius (father of the later Emperor Theodosius I) then defending Britain, and set up residence in 367 in Ambiani (modern Amiens), (France). He proclaimed his nine-year-old son, Gratian, as co-emperor on 24 August 367. He took up residence, where he remained for seven years devoting his attention to the construction of an elaborate system of fortifications on the Rhine, in October 367 in Trier, (Germany). He died on 17 November 375 in Bregetio, Pannonia Inferior, at age 54 years. Defending against an invasion of Pannonia by the Quadi, he went to Sirmium, where he fell sick and died.