Shērōē, better known by his dynastic name of Kavad II, was king of the Sasanian Empire briefly in 628. He was the son of Khosrow II, whom he succeeded after having him overthrown in a coup d'état. Kavad's reign is seen as a turning point in Sasanian history, and has been argued by some scholars as playing a key role in the fall of the Sasanian Empire.
On 25 February, Sheroe, along with his commander Aspad Gushnasp, captured Ctesiphon and imprisoned Khosrow II. He then proclaimed himself as shah of the Sasanian Empire and assumed the dynastic name of Kavad II. He proceeded to have all his brothers and half-brothers executed, including the heir Mardanshah, who was Khosrow's favourite son. The murder of all his brothers, "all well-educated, valiant, and chivalrous men", stripped the Sasanian dynasty of a future competent ruler and has been described as a "mad rampage" and "reckless". Three days later he ordered Mihr Hormozd to execute his father. However, after the regicide of his father, Kavad also proceeded to have Mihr Hormozd killed. His sisters Boran and Azarmidokht reportedly criticized and scolded him for his barbaric actions, which made him filled with remorse. Due to Kavad's actions, his reign is seen as a turning point in Sasanian history, and has been argued by some scholars as playing a key role in the fall of the Sasanian Empire. The overthrow and death of Khosrow culminated in a chaotic civil war, with the most powerful members of the nobility gaining full autonomy and starting to create their own government. The hostilities between the Persian and Parthian noble-families were also resumed, which split up the wealth of the nation. With the agreement of the Iranian nobles, he then made peace with the victorious emperor Heraclius, which allowed the Byzantines to gain all their lost territories, their captured soldiers, a war indemnity, along with the True Cross and other relics that were lost in Jerusalem in 614. Kavad granted complete religious freedom to Christians under his rule. He also appointed Armenian nobleman Varaztirots II Bagratuni as marzban of Sasanian Armenia, and appointed Ishoyahb II as the new Catholicos of the Nestorian Church of the East. Kavad later died from plague after a few months' reign on 6 September 628. The grandees of the empire elected his eight-year-old son Ardashir III. In reality, however, he exercised little power and his empire was controlled by his vizierMah-Adhur Gushnasp, whose duty was to protect the empire until Ardashir became old enough to rule.
Marriage
A passage of the Chronicle of Edessa identifies "Anzoy the Roman" as the wife of Kavad II and mother of Ardashir III. She was probably a Christian princess from the Byzantine Empire.