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Heritage classified

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Origin and history

The church of Saint-Désiré de Lons-le-Saunier, first mentioned in 1083, is linked to an ancient Christian community, perhaps dating back to the fourth century with the death of Saint Desiré in 414. The papal bubble of Eugene III confirms his status as Benedictine priory dependent on the abbey of Baume. There was no documentary record of work between the 13th and 15th centuries, but a local fraternity claimed in 1474 that it had rebuilt the building, challenging monastic paternity.

The fire of 1510 and 1536, then the capture of Lons-le-Saunier by the troops of Henri IV in 1595, partially destroyed the church: the structure burned, the choir was damaged, and the bell tower collapsed. The reconstruction of the choir, initiated by Prior Georges d'Abbans (1592–1599), was completed under Antoine de Grivel (1625–1634), who installed the stalls. The bell tower, rebuilt in 1604 and raised in 1672, was finally damaged in 1795 during the Revolution.

In the 19th century, major changes transformed the building: in 1809, the first span of the nave and two 15th century chapels were demolished to facilitate access to the prefecture. Curé Carette, in 1844, destroyed the old sacristy and rearranged space, while parish priest Blanche rebuilt the bell tower in 1878. The crypt, classified in 1908, and the rest of the church, inscribed in 1927, bear witness to this turbulent history.

The restorations of the 20th century, supervised by the architect Julien Polti from 1931, preserve this heritage combining Romanesque, Gothic and modern additions. The crypt still houses the sarcophagus of St.Desiré, highlighting the millennium link between the building and the Lédonian community.

The church illustrates the tensions between religious and secular power: the 15th century fraternity, revolutionary destructions, and redevelopments related to the prefectural administration reflect its central role in local life, between worship, power and collective memory.

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