Tiridates

Tiridates was the name of three members of the Arsacid Dynasty of Parthia:
Tiridates I of Parthia was the brother of Arsaces I.
Tiridates II of Parthia ruled c. 30–26 BC 
Tiridates III of Parthia ruled c. AD 35–36

Tiridates (Trdat in Armenian) was the name of three kings of the Arsacid Dynasty of Armenia:
 Tiridates I of Armenia ruled c. 56–59 and 62–72
 Tiridates II of Armenia ruled c. 197–238
 Tiridates III of Armenia ruled c. 283–330

Other

Trdat the Architect, reconstructed the dome of Hagia Sophia in 989 and built the Cathedral of Ani.