Commander of the Excubitores; Caesar 572, co-ruler 578
Byzantine emperor from 578 who succeeded in defending the empire against the Persians to the east but suffered reverses in conflicts with the Avars and the Slavs to the north and west.
Tiberius served in campaigns against the Avars in the Balkans under Justin II. About the year 574, Justin became subject to fits of insanity; the empress Sophia…