Eustace IV, Count of Boulogne Eustace IV, Count of Boulogne Eustace IV (c. 1127–1135 – 17 August 1153), Count of Boulogne, was the eldest son of King Stephen of England and Countess Matilda I of Boulogne. When his father seized the English throne on Henry I's death in 1135, he became heir apparent to the English throne. Upon his mother's death in 1152 he inherited the county of Boulogne and other estates. Eustace was first mentioned in one of his parents' charters dated no later than August 1131. As heir to the English throne in 1137, he did homage for Normandy to Louis VII of
Peroz I named Ashtat). After having found her, Peroz marries her and at her request, lay foundation to the city of Amol in Tabaristan. Peroz I Peroz I (Middle Persian: 𐭯𐭩𐭫𐭥𐭰; New Persian: پیروز "Pirouz", lit. "the Victor") was the eighteenth king of the Sasanian Empire, who ruled from 459 to 484. Peroz I was the eldest son of Yazdegerd II (438–457). On the death of Peroz I's father, Yazdegerd II, the younger son of the deceased emperor, Hormizd, seized the throne in the absence of his elder brother Peroz who had been posted as the governor of distant Sistan; Peroz was