Boran (r. 630, 631-632) and Azarmiduxt (r. 630-631) were the only queens of the Sassanian Empire who ruled with the power of absolute monarchs. Daughters of Shahanshah (king of kings) Khosrow II (r. 590-628), Boran and Azarmiduxt, tried to hold the empire together as it grappled with a civil war between two groups of the nobility, the Pahlavs and the Parsigs, and the Islamic invasion.
This is a companion discussion topic for the original content at https://www.worldhistory.org/article/2655/boran--azarmiduxt-queens-of-the-sassanian-empire/.