Vache II previously ruled Caucasian Albania as a
Sasanian vassal, but had been forced to abdicate after his revolt was crushed by Yazdegerd II's son and successor
Peroz I () in 462. Albania would remain kingless until 485, when Vachagan III was installed on the throne by Peroz's brother and successor
Balash (). This happened around the time of the signing of the
Treaty of Nvarsak. The 6th-century
Syriac author
Zacharias Rhetor reports the
siege of the
Byzantine city of
Amida by the Sasanian forces. After the city was captured in January 503, the victors started plundering the city and capturing prisoners. While this took place, mention is made of a "Christian prince of the country of Aran pleaded with the (Persian) king on behalf of one church, called the Church of the Forty Martyrs, and he spared it while it was full of people." Modern historian
Murtazali Gadjiev deduces that the Christian prince described is "without a doubt" Vachagan III. Although sources don't give date for end of Vachagan's reign, Hakobyan puts it into 523, about the time of
Kavad I's invasion of Georgia and abolishment of Iberian monarchy. == Family ==