The "Kings of Parthia" refers to the rulers of the ancient Parthian Empire, which existed from approximately 247 BCE to 224 CE. This empire was located in what is now northeastern Iran and was known for its significant role in trade along the Silk Road and its conflicts with the Roman Empire. The Parthian kings were known for their cavalry and innovative military tactics. The Parthian dynasty began with Arsaces I, who founded the Arsacid dynasty. Over the centuries, the kings expanded their territory and influence, establishing a rich cultural heritage that blended Persian, Greek, and Central Asian elements. The Parthian Empire eventually fell to the Sassanian Empire in the 3rd century CE.