William is thought to be related to Ivo de Taillebois, who helped administer the Cumbrian region and formed Kendal into what would become the barony, under the first two Norman kings, William the Conqueror and William Rufus. Ketel fitz Eldred is known to have been lord over similar areas after the death of Ivo, and before the time when William took over. But between Ivo and William, a period which included Scottish occupation, the history of the Barony of Kendal is very unclear.