After Kavad I had reclaimed the Sasanian throne from his younger brother Jamasp in 498, he appointed Bozorgmehr as his minister (wuzurg framadār).
During his tenure, Bozorgmehr persuaded Kavad to stop taxation on fruits and grain from the peasantry.
An early reference to Bozorgmehr is found in the Aydāgār ī Wuzurgmihr, in which he is called an argbed—a high-ranking title in the Sasanian and Parthian periods.
Among other sources, later mention of him is made in the Shahnameh and in al-Tha'alibi’s Ghurar and al-Masudi’s Murūj al-Dhahab.
During the reign of Kavad I's son and successor, Khosrow I (r. 531–579), Bozorgmehr continued his tenure as minister of the shah.
He further rose to prominence after being appointed as military commander (spahbed) of the kust (frontier region) of Khorasan (Khwarasan) by Khosrow I, who reportedly regretted Kavad I's approach to the family.

During the reign of Khosrow I's son Hormizd IV (r. 579–590), Bozorgmehr continued to serve as spahbed of the Khorasan.
Two seals of Bozorgmehr has been found; both of them whom Bozorgmehr emphasizes his Parthian ancestry by claiming to be a Parthian aspbed (aspbed-i pahlaw).
According to Ferdinand Justi, Bozorgmehr was later executed by the order of Hormizd IV.
His execution probably lead to the legendary story of the royal resentment reported in various versions by al-Masudi, Ferdowsi, and al-Tha'alibi.
The versions of Ferdowsi and al-Tha'alibi, which link Bozorgmehr with the reign of Khosrow I, he was reportedly pardoned by the shah, who was well-known for his fairness.
In the version of al-Masudi, Bozorgmehr was linked with the reign of Khosrow II, where no mention of his execution is made.

Bozorgmehrs descendants continued to remain active in Iran, with one of them, Adhar Valash, ruling Tabaristan and Gorgan under the last Sasanian shah, Yazdegerd III (r. 632–651).
His grandson, Valash, ruled Tabaristan from 665 to 673.
After Kavad I had reclaimed the Sasanian throne from his younger brother Jamasp in 498, he appointed Bozorgmehr as his minister (wuzurg framadār). During his tenure, Bozorgmehr persuaded Kavad to stop taxation on fruits and grain from the peasantry. An early reference to Bozorgmehr is found in the Aydāgār ī Wuzurgmihr, in which he is called an argbed—a high-ranking title in the Sasanian and Parthian periods. Among other sources, later mention of him is made in the Shahnameh and in al-Tha'alibi’s Ghurar and al-Masudi’s Murūj al-Dhahab. During the reign of Kavad I's son and successor, Khosrow I (r. 531–579), Bozorgmehr continued his tenure as minister of the shah. He further rose to prominence after being appointed as military commander (spahbed) of the kust (frontier region) of Khorasan (Khwarasan) by Khosrow I, who reportedly regretted Kavad I's approach to the family. 
During the reign of Khosrow I's son Hormizd IV (r. 579–590), Bozorgmehr continued to serve as spahbed of the Khorasan. Two seals of Bozorgmehr has been found; both of them whom Bozorgmehr emphasizes his Parthian ancestry by claiming to be a Parthian aspbed (aspbed-i pahlaw). According to Ferdinand Justi, Bozorgmehr was later executed by the order of Hormizd IV. His execution probably lead to the legendary story of the royal resentment reported in various versions by al-Masudi, Ferdowsi, and al-Tha'alibi. The versions of Ferdowsi and al-Tha'alibi, which link Bozorgmehr with the reign of Khosrow I, he was reportedly pardoned by the shah, who was well-known for his fairness. In the version of al-Masudi, Bozorgmehr was linked with the reign of Khosrow II, where no mention of his execution is made.
Bozorgmehrs descendants continued to remain active in Iran, with one of them, Adhar Valash, ruling Tabaristan and Gorgan under the last Sasanian shah, Yazdegerd III (r. 632–651). His grandson, Valash, ruled Tabaristan from 665 to 673.
Bozorgmehr