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Origin and history

Saint-Jean-Baptiste church in Saint-Jean-le-Thomas, Normandy, is one of the oldest religious buildings in the region. Its origins date back to the lower Roman Empire, with remains embedded in the north and south walls of the choir, dated between 169 and 338. The elevation of the choir, in a Carolingian style, was dated between 814 and 1014, probably corresponding to the first written mention of the building in 917, when Guillaume Longue-Épée, Duke of Normandy, donated it to the abbey of Mont-Saint-Michel.

In 917 Guillaume Longue-Épée, second Duke of Normandy, offered the seigneury and its church to the abbey of Mont-Saint-Michel. This gift was confirmed in the 11th century by Robert I of Normandy, who associated other lands with it. In 1162, Guillaume de Saint-Jean, the local lord and founder of the abbey of La Lucerne, gave the church to the latter, which is confirmed by a draught of 1412. The archaeological study of 2021 reveals seven phases of construction, from the Gallo-Roman era to the modifications of the 16th-17th centuries.

The murals of the 11th–XIIth centuries, discovered in 1970, include biblical scenes such as the Cain and Abel cycle. These paintings, restored several times, testify to the artistic importance of the building. The church, which was listed as a historical monument in 1967, also houses remarkable furniture, including a 17th-18th century altarpiece and classified statues. Its simple plan, with a unique nave and a flat bedside choir, reflects its architectural evolution throughout the centuries.

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