Fergus of Galloway married to David's older sister, Edith (died 1118), a union which closely bound him to the Scottish royal house. For as long as Henry I lived, relations between him and David remained harmonious. When the former died in 1135, however, the peace between the neighbouring realms was shattered when his nephew, Stephen of Blois, Count of Boulogne and Mortain (died 1154), successfully seized the throne. Before the end of the year, the Scots surged forth and seized Carlisle and Cumberland before peace was restored. Relations broke down the following year, and the Scots again invaded in 1137, seizing Northumberland, and
Peroz I 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 thus forced to seek the protection of the Hephthalites. The Hephthalite monarch, Khushnavaz, was glad to welcome him and aid him in