Anselm.
This man came to power after the death of his predecessor at the hands of Walter Tirel. He further solidified his position by marrying the Scottish princess Edith and by ceding lands in Normandy in the treaty of Alton. His conflict with Paschal II was settled by the Concordat of London, which also led to the return from exile of St.Anselm. This king established the Exchequer and also issued reforms in the Charter of Liberties. The death of his legitimate heir William Atheling in the White Ship Tragedy resulted in civil war between this ruler's daughter Matilda and his eventual successor Stephen of Blois. For 10 points name this Norman ruler, nicknamed the Lion of Justice and Beauclerc, the second of William the Conqueror's sons and first of his name to rule England.
This man came to power after the death of his predecessor at the hands of Walter Tirel.
Henry I of England [prompt on Henry]