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He was the Grandfather of industrialist Paul Wittouck.
Adurfrazgird
Adurfrazgird was a Sasanian prince, who served as the governor of Nisibis under his brother Shapur II (r. 309-379).
His name is derived from the Avestan "frašō.kərətihaving the furtherance of fire").
There is no evidence that Adurfrazgird was older or younger than Shapur II.
He most likely had another mother, who was either another wife of his father Hormizd II, or perhaps a concubine.
According to the Syriac Acts of the Persian Martyrs, the western frontier province of Arbayistan was divided in the 360s between Adurfrazgird and his brother Zamasp; Adurfrazgird governed Nisibis
whilst Zamasp governed an area along the Tigris river.
The two brothers were to keep an eye for each other and Roman activities.
Zamasp was notably noted for his persecution of Christians.
Hormizd II
Hormizd II (New Persian:) was king (shah) of the Sasanian Empire.
He ruled for seven years and five months, from 303 to 309.
He was a son and successor of Narseh .
During his reign, the Kingdom of Armenia declared Christianity as its official religion, thus leaving its ancient Zoroastrian heritage that it shared with Sasanian Iran.
Hormizd II's reign was also marked by internal turmoil, which he successfully managed to deal with it.
Hormizd II was also successful in his efforts in the west, defeating and killing the Ghassanid king in Syria.
His reign was, however, cut short by the intrigues of the Iranian nobility, that killed him in a secluded place.
He was succeeded by his son Adur Narseh, who after a few months of reigning was also killed by the nobility.
They instead installed Hormizd II's infant son Shapur II on the throne.
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He was the grandfather of Henry Bryant Bigelow.
Abd al-Muttalib
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He was the grandfather of Nara Bhupal Shah.
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He was the grandfather of Emperor Yōzei.
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He was the grandfather of singer/ poet Leonard Cohen.
John Westley
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He was the grandfather of John Wesley( founder of Methodism).

Question: Who is the paternal grandfather of Adurfrazgird?
Answer: Narseh