The name of Waterloo was mentioned for the first time in 1102 designating a small hamlet at the limit of what is today known as the Sonian Forest, along a major road linking Brussels, Genappe and a coal mine to the south. Waterloo was located at the intersection of the main road and a path leading to a small farming settlement in what is now Cense. The crossing can still be found today as the intersection of the Chaussée de Bruxelles with Boulevard de la Cense. Waterloo was a place where travellers and merchants, particularly those carrying coal from the mine to the south, could find rest and protection from bandits.