Shapur I
To preserve the autonomy of Arsacid rule in Armenia, Tiridates II sought friendly relations with Rome. This was an unfortunate choice, because the Sassanid king Shapur I defeated the Romans and made peace with the emperor Philip. In 252 Shapur I invaded Armenia and forced Tiridates II to flee. After the deaths of Tiridates II and his son Khosrov II, Shapur I installed his own son Hurmazd on the Armenian throne. When Shapur I died in 270, Hurmazd took the Persian throne and his brother Narseh ruled Armenia in his name.