Robert Curthose joined the First Crusade. He needed money to fund this venture and pledged his Duchy of Normandy to William in return for a payment of 10,000 marks, which equates to about a quarter of William's annual revenue. In a display of the effectiveness of English taxation, William raised the money by levying a special, heavy, and much-resented tax upon the whole of England. He then ruled Normandy as regent in Robert's absence. Robert did not return until September 1100, one month after William's death. As regent in Normandy, William campaigned in France from 1097 to 1099. He secured northern Maine but failed to seize the French-controlled part of the Vexin region. According to William of Malmesbury he was planning to invade the Duchy of Aquitaine at the time of his death. Death William went hunting on 2 August 1100 in the New Forest, probably near Brockenhurst, and was killed by an arrow through the lung, although the circumstances remain unclear. The earliest statement of the event was in the Anglo-Saxon Chronicle, which noted that the king was "shot by an arrow by one of his own men." Later chroniclers added the name of the killer, a nobleman named Walter Tirel, although the description of events was later embroidered with other details that may or may not be true. The first mention of any location more exact than the New Forest comes from John Leland, who wrote in 1530 that William died at Thorougham, a placename that is no longer used, but that probably referred to a location on what is now Park Farm on the Beaulieu estates. A memorial stone in the grounds of Beaulieu Abbey, Hampshire, states "Remember King William Rufus who died in these parts then known as Truham whilst hunting on 2nd August 1100". The king's body was abandoned by the nobles at the place where he fell. An arrow maker, Eli Parratt, later found the body. William's younger brother, Henry, hastened to Winchester to secure the royal treasury, then to London, where he was crowned within days, before either archbishop could arrive. William of Malmesbury, in his account of William's death, stated that the body was taken to Winchester Cathedral by a few countrymen, including Eli who discovered the body. To the chroniclers, men of the Church, such an "act of God" was a just end for a wicked king, and was regarded as