Roger de Tosny was a notable figure from the 11th century, known for his role as a Norman nobleman. He was a supporter of William the Conqueror during the Norman Conquest of England in 1066. Roger was granted lands in England for his loyalty and military service, which helped establish the Norman presence in the region. He is often associated with the Tosny family, which played a significant role in the feudal system of medieval England. Roger de Tosny's legacy includes the establishment of various estates and the influence of his descendants in English history.