Tiridates II, known in Armenian sources as Khosrov, was an Armenian Parthian Prince who served as a Roman ClientKing of Armenia. Tiridates II was the son and heir of the Armenian King Khosrov I, by an unnamed mother. Tiridates II was the namesake of his ancestor, Tiridates I of Armenia and of his Parthian ancestors who ruled with this name as King. As a part of the Armenian Arsacid period, he was also known as Khosrov. During the last years of his father's reign in 214-216, Tiridates II with his family where under Roman detention for unknown reasons which provoked a major uprising in Armenia against Rome. In 215, the Roman emperorCaracalla with the Roman army had invaded Armenia to end the uprising. In 217 Khosrov I had died and Tiridates II succeeded his father as King of Armenia. Tiridates II was granted the Armenian Crown by Caracalla. He was declared King of Armenia upon Caracalla's assassination which was on April 8, 217. Tiridates II ruled as King of Armenia from 217 until his death in 252. After the death of Caracalla, Macrinus became the new Roman emperor and not so long after Tiridates II received his Armenian Kingship, Macrinus agreed to release Tiridates II's mother from Roman captivity. After the Battle of Nisibis in 217 and the treaty that occurred after between Rome and Parthia, Tiridates II was officially restored to his Armenian throne and his rule over Armenia was officially recognised. At an unknown date during his reign, there's the possibility that the Mamikonian family immigrated from Bactria to Armenia. Tiridates II was first the King in Armenia to persecuteChristians in the country which continued with his predecessors. Partly due to his long reign, Tiridates II became one of the most powerful and most influential monarchs from the Arsacid dynasty. In 224, the Parthian Empire was destroyed; the last King who was Tiridates II's paternal uncle, Artabanus V of Parthia was killed by Ardashir I, the first king of the Sassanid Empire. In 226-228, Ardashir I after annexing Parthia wanted to expand his Empire which including conquering Armenia. Into two years of the conflict, the armies of the Romans, Scythians and the Kushans withdrew. Tiridates II with his army was left in the end alone to continue fighting against Ardashir I. Tiridates II put up a stubborn resistance against Ardashir I and wasn't defeated after no less than ten years of fighting. After twelve years of fighting with Tiridates II, Ardashir I withdrew his army and left Armenia. Tiridates II's military conflict with Ardashir I highlights the strength of Armenia in the time of Tiridates II. Tiridates II died in 256 and was succeeded by his son, Khosrov II of Armenia.
