Simplify the following text for a Grade 12 native English-speaking person.
Original: Arsacid Kings reigned intermittently throughout the chaotic years following the fall of the Artaxiad Dynasty until 62 AD when Tiridates I of Armenia secured Arsacid rule in Armenia .
Simplified: Arsacid Kings reigned intermittently throughout the chaotic years after the fall of the Artaxiad Dynasty until 62 when Tiridates I of Armenia secured Arsacid rule in Armenia .