The tower of Saint-Lambert was probably built during the latter half of the 14th century. Indeed, on 18th October 1331, PONS, Seigneur of Castillon, allowed Gaucelme de CASTILLON, member of one of the richest Médoc families, to build a fortress in Saint-Lambert. In 1378, Château Latour " en Saint-Maubert ", called later Château La Tour and then Château Latour, entered the annals of history.We are at that time in the midst of the one hundred years war and the Tower of Saint-Mambert, a fortified post guarding the estuary, is being held by Breton soldiers employed by the King of France. After a siege lasting three days, the Anglo-Gascon army seized the fort and installed a garnison. Latour stayed under British domination, until the capitulation's treaty, just after the Battle of Castillon, on 17th July 1453. The history of the Saint-Maubert Tower is now a mystery because it doesn't exist anymore... Nowhere, on the 1759 cadastre in Château Latour, do we have the sign of a building that looks like a tower. The fortress, in the 14th century, was based at about 300 meters from the river. We can only assume that the tower stood on the south-east side of the vineyard, near the Juillac river. The old tower was probably not round, but square. If we refer to the time of its construction, we can imagine it was a quadrangular building, with at least two floors.The existing tower, which has nothing to do with the original one, did not give its name to the vineyard. This tower is indeed a pigeon house, probably built with the stones of the old Château between 1620 and 1630... It would appear that the domaine of Latour remained under joint ownership until the end of the sixteenth century, the co-proprietors receiving rent from their tenants who cultivated the land. By the end of the sixteenth century the proprietors had been reduced to a family called Mullet and if direct control was progressively replacing that of tenants and co-proprietors, the system of viticulture was to remain virtually the same until the end of the seventeenth century.