Mihransitad is first mentioned around 570, when, after king Khosrau's peace treaty with the Turks, he was sent to estimate the quality of the daughter of the Turkish Khan Istämi. According to Armenian sources her name was Kayen while Persian sources states that her name was Qaqim-khaqan. After Mihransitad's visit in Central Asia, Khosrau married Qaqim-khaqan. According to some sources, Hormizd IV, the successor of Khosrau, was the son of the Turkish princess. However, Encyclopædia Iranica states that the marriage with the daughter of the Turkish khaqan is chronologically impossible, and says that Hormizd was born in 540, thirty years before Khosrau's marriage. Mihransitad's son, Nastuh later took part in the campaigns of Khosrau against the Byzantines.
Mihransitad is later mentioned as being retired in his hometown Ray and keeping apart from society. In 588, however, the Sasanian Empire was in chaos, and he was summoned by Hormizd IV at the urging of Nastuh. According to Ferdowsi, he told the Sasanian king that the astrologers had predicted that a certain Bahram Chobin would be the savior of Iran. He then suggested that Bahram Chobin should be summoned to the Sasanian court. The aged Mihransitad is said to have immediately died after that.
- Pourshariati (2008), p. 103
- Ter-Mkrticnyan L.H. Armyanskiye istochniki - Sredney Azii V - VII vv., p. 57.
- The Farsnama of Ibnu'l-Balkhi, pp. 24, 94.
- SASANIAN DYNASTY – Encyclopaedia Iranica
- Pourshariati (2008), p. 117
- Pourshariati (2008), p. 124
- Pourshariati, Parvaneh (2008). Decline and Fall of the Sasanian Empire: The Sasanian-Parthian Confederacy and the Arab Conquest of Iran. London, United Kingdom: I.B. Tauris. ISBN 978-1-84511-645-3.