William de Warenne was a prominent Norman nobleman who played a significant role in the early years of the Norman Conquest of England. He was born around 1030 and became the 1st Earl of Surrey after the conquest in 1066. William was a loyal supporter of William the Conqueror and was rewarded with vast lands and estates in England for his military service. As the Earl of Surrey, William de Warenne was responsible for overseeing the administration of his territories and contributed to the establishment of Norman rule. He founded several monasteries, including Lewes Priory, and was known for his efforts in promoting the Christian faith in his lands. His legacy continued through his descendants, who remained influential in English history.