The history of Lihou is closely linked to the history of Guernsey in particular and the Channel Islands in general. The earliest evidence of habitation is
Mesolithic objects recovered from archaeological digs of the 1990s, along with
Neolithic era tombs on the nearby mainland. The recorded history of Lihou began in 933 AD when the Channel Islands were seized from Brittany by the ruler of Normandy. Lihou and the nearby Neolithic tombs were traditionally believed to have been meeting places for local witches and fairies. especially when a priory was established on Lihou dedicated to
St Mary (known locally as
Our Lady of Lihou). A number of dates have been suggested for the establishment of the priory, with estimates ranging from as early as 1114 Ownership of the island was granted to the abbey by
Robert I, Duke of Normandy in the early part of the eleventh century. The priory is thought to have been constructed with contributions from the Guernseymen, who appear to have been fairly affluent at the time. or 1304, a priory servant called Thomas le Roer was alleged to have murdered one of the monks. The Bailiff and several assistants attempted to apprehend Le Roer, but he did not surrender, and was subsequently killed by Ranulph Gautier, one of the Bailiff's assistants. had the priory destroyed to prevent French forces from capturing the island during the
Seven Years' War. In 1961 Lieutenant-Colonel Patrick Wootton purchased Lihou. Wootton had plans to develop the island, beginning in the following year by clearing the area of the old farmhouse in preparation for the building of a new farmhouse, with construction work continuing into 1963. The ruins of the priory are possibly the most extensive religious relic in Guernsey. and in 1998, when several twelfth-fourteenth century graves were unearthed. ==Economy==