Lyons-la-Forêt () is a commune of the Eure department, Normandy, in northwest France. Lyons-la-Forêt has distinctive historical geography, and architecture, and contemporary culture, as a consequence of the Forest of Lyons, and its bocage, and of the adjacent Pays de Bray. Geography Lyons-la-Forêt is located from Rouen and from Gisors. Former name: Saint-Denis-en-Lyons. Lyons was originally the name of the forest Licontio-/Ligontio-, based probably on the Celtic root lic/lig, that is also found in the name of the stream: la Lieure Licoris /Ligoris. Same root as the river Loire < Liger and -ley in Beverley (Yorkshire) from Celtic > Old English beaver, stream. History An early mention of a ducal residence in Lyons can be found in 936, when William I, Duke of Normandy used to stay. The castle of Lyons-la-Forêt was constructed at the start of the 12th century by Henry I of England, also known as "Henri Beauclerc". He died there in 1135, supposedly from "a surfeit of lampreys". The town and the castle were occupied by King Philip II Augustus of France in 1193 but the following year, Richard I of England, back from captivity, obtained the restitution of Lyons; the king of England and Duke of Normandy stayed frequently until 1198. In 1202, Philip II Augustus re-conquered the city, and after him, several French kings were attracted by the Lyons forest and the good hunting grounds. From 1359 to 1398, the castellan domain of Lyons was part of Blanche de Navarre's dower after she became the widow of King Philip VI of France. In 1403–1422, it was the dower of Isabeau de Bavière, wife of King Charles. In 1419, in the course of the Hundred Years' War, the English took Lyons. During the Second World War, the area was used for parachute drops of agents F. F. E. Yeo-Thomas and André Dewavrin. Population Gallery Sights Gallo-Roman theatre (private property) Castle of Henry I of England (private property) Covered market place (18th century) Church Saint-Denis (12th and 18th centuries) Town hall (17th century) Houses built in typical Normandy style (17th and 18th centuries) The forest is 10,700 hectares, the largest state forest in Normandy and one of the largest Beech forests in Europe. It is renowned for the "cathedral-like" straightness and height of its trees' trunks. One of its characteristics is its numerous open spaces and clearings among which lie small villages and hamlets. This makes a