Norman Conquest
From Tardis Wiki, the free Doctor Who reference
According to a poster in a Coal Hill history classroom, the Norman Conquest of England was an event that took place in 1066, featuring three major players. (TV: Co-Owner of a Lonely Heart, Co-Owner of a Lonely Heart)
The Normans were led by William the Conqueror, and fought and defeated the Saxons at the Battle of Hastings. The Saxons were led by Harold Godwinson. (TV: The Time Meddler, PROSE: The Real Hereward)
