As he had done earlier in Normandy, William spent the coming years securing his power, and in so doing he faced a number of foes—including his son Robert and his brother Odo. Robert had a powerful ally in King Philip I of France, who hoped to gain control of Normandy, and though William gained the victory over all his foes (he sent Robert away, and had Odo imprisoned), the conflicts forced him to devote much of his reign to warfare.
William also instituted a number of reforms designed to strengthen his hold on the throne. Going against the principles of feudalism, which spread power among many nobles, he concentrated as much wealth and authority as he could in the hands of the king. As part of this process, in 1082 he ordered an intensive study of the lands and properties in England, the Domesday Book.
Meanwhile, the most lasting effects of the Norman invasion began to work their way into English culture. Norman architecture would prove highly influential on English buildings for centuries to come, but even more important was the Norman effect on the English language. The French-speaking Normans brought a whole new vocabulary to England, whose language was closely related to German. As a result, English today has an amazing array of words, some derived from French and Latin, others from German.
A scene from the Bayeux Tapestry depicting the English fleeing the Battle of Hastings. William's Norman army was victorious, and William became the king of England. Reproduced by permission of the Corbis Corporation.