Detailed Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: This son of Robert the Devil began construction on the White Tower in London. This ruler's claim to the throne was backed by Pope Alexander II. This man ordered the creation of the Domesday Book. His queen was Matilda and Henry I was his son. This man's victory over Harold II began the Norman rule of England. For 10 points, name this ruler who won the Battle of Hastings and became King of England in 1066.
A:
History