Phraates I, a prominent figure of the Arsacid dynasty, reigned as king from approximately one hundred seventy to one hundred sixty-four BC. His rule was marked by significant military achievements, including the subjugation of the Amardi people and the conquest of their mountainous territory in the Alborz region.
In addition to his military conquests, Phraates I played a crucial role in reclaiming Hyrcania from the Seleucid Empire, thereby strengthening the position of the Arsacid dynasty in the region. His reign was characterized by a commitment to expanding and consolidating his kingdom's influence.
Phraates I's life came to an end around one hundred sixty-four BC, but his legacy continued through his brother, Mithridates I, whom he had designated as his heir. Mithridates I would go on to rule from one hundred sixty-five to one hundred thirty-two BC, furthering the ambitions of the Arsacid dynasty.