When William I died in 1087, his eldest son, Robert, succeeded to Normandy. No specific succession was determined for England, but it may simply have been assumed that William's second son, would succeed. His third son, Henry, received a large sum of money. Following the death of his brother, Henry became king of England and then Duke of Normandy, too. When Henry died in 1135, Stephen was crowned but when Stephen's son died, he signed a treaty recognising Matilda's son Henry, as his heir.