Ranulf Flambard was a medieval Norman Bishop of Durham and an influential government minister of King William Rufus of England. Ranulf was the son of a priest of Bayeux, Normandy, and his nickname Flambard means incendiary or torch-bearer, and may have referred to his personality. He started his career under King William I of England, probably in the compilation of the Domesday Book of 1086, as well as being the keeper of the king's seal. On the death of William I, Ranulf chose to serve the new king of England, William Rufus.

Henry I, also known as Henry Beauclerc, was King of England from 1100 to his death in 1135. He was the fourth son of William the Conqueror and was educated in Latin and the liberal arts. On William's death in 1087, Henry's elder brothers Robert Curthose and William Rufus inherited Normandy and England, respectively, but Henry was left landless. He purchased the County of Cotentin in western Normandy from Robert, but his brothers deposed him in 1091. He gradually rebuilt his power base in the Cotentin and allied himself with William Rufus against Robert.