William I. William's contemporary, chronicler Orderic Vitalis, wrote about an incident that took place at L'Aigle in Normandy in 1077 or 1078: William and Henry, having grown bored with casting dice, decided to make mischief by emptying a chamber pot onto their brother Robert from an upper gallery, thus infuriating and shaming him. A brawl broke out, and their father had to intercede to restore order.<ref name="Barlow33">Barlow William Rufus pp. 33–34</ref> According to William of Malmesbury, writing in the 12th century, William Rufus was "well set; his complexion florid, his hair yellow; of open countenance; different coloured eyes, varying with certain glittering specks; of astonishing strength, though not very tall, and his belly rather projecting." England and France The division of William the Conqueror's lands into two parts presented a dilemma for those nobles who held land on both sides of the English Channel. Since the younger William and his brother Robert were natural rivals, these nobles worried that they could not hope to please both of their lords, and thus ran the risk of losing the favour of one ruler or the other, or both. The only solution, as they saw it, was to unite England and Normandy once more under one ruler. The pursuit of this aim led them to revolt against William in favour of Robert in the Rebellion of 1088, under the leadership of the powerful Bishop Odo of Bayeux, who was a half-brother of William the Conqueror. As Robert failed to appear in England to rally his supporters, William won the support of the English with silver and promises of better government, and defeated the rebellion, thus securing his authority. In 1091 he invaded Normandy, crushing Robert's forces and forcing him to cede a portion of his lands. The two made up their differences and William agreed to help Robert recover lands lost to France, notably Maine. This plan was later abandoned, but William continued to pursue a ferociously warlike defence of his French possessions and interests to the end of his life, exemplified by his response to the attempt by Elias de la Flèche, Count of Maine, to take Le Mans in 1099. William Rufus was thus secure in his kingdom. As in Normandy, his bishops and abbots were bound to him by feudal obligations, and his right of investiture in the Norman tradition prevailed within his kingdom during the age of the Investiture