In 1066 the manor of Lathom was the most important of 17 manors held by Uctred, an Anglo-Danish landowner. These manors were set up by Æthelstan in the 10th century. By 1189 Robert Fitzhenry de Lathom possessed lands throughout south Lancashire, extending to Flixton in the barony of Manchester. Siward son of Dunning held the township in thanage in the reign of Henry II. Robert de Lathom, in the reign of Edward I was granted the right to hold a market and an annual fair. Robert Lathom founded Burscough Priory in or before 1189.