[1] The main source on the principality's history during the Early Middle Ages is the History of Taron, a relatively short "historical" romance in five parts, purporting to describe significant events occurring in the district of Taron during the Byzantine–Sassanid Wars when the Sassanid emperor was Khosrau II (590-628).
The History describes the actions of five generations of Mamikonians (Taron's princely house), in defending and avenging the district.
The heroes are at times superhumanly brave or duplicitous, wise or cunning, humble or bombastic, humane or brutally merciless as the situation requires.
[3] Under Byzantine rule, Taron was united with the district of Keltzene into a single province (theme), whose governor (strategos or doux) usually bore the rank of protospatharios.
[4] Following the Byzantine defeat in the Battle of Manzikert against the Seljuk Turks in 1071, an independent Armenian lord named Tornik seized power in Taron, with Muş as his capital.