Justin II
Tiberius II Constantine (; , "Tiberios Kōnstantînos"; 520 – 14 August 582) was Eastern Roman emperor from 574 to 582. Tiberius rose to power in 574 when Justin II, prior to a mental breakdown, proclaimed Tiberius Caesar and adopted him as his own son. In 578, Justin II, before he died, gave him the title of Augustus, under which title he reigned until his death on 14 August 582.