Initial construction XIIe siècle (≈ 1250)
Building of the nave and sculpted portal.
XIVe siècle
Architectural changes
Architectural changes XIVe siècle (≈ 1450)
Period of work not detailed in sources.
1er quart XVe siècle
Completion or overhaul
Completion or overhaul 1er quart XVe siècle (≈ 1525)
Last construction phase mentioned.
10 avril 1990
Historical Monument
Historical Monument 10 avril 1990 (≈ 1990)
Official protection of the chapel.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
Chapelle Saint-Guillaume (Box B 291): Order of 10 April 1990
Key figures
Guillaume - Legendary hermit
Would have treated a knight, inspiring the foundation.
Chevalier anonyme - Suspected Founder
Promised the chapel after its healing.
Origin and history
The chapel Saint-Guillaume, located in Sainte-Gemme in New Aquitaine, is a religious building built between the 12th and 1st quarter of the 15th century. This historic monument consists of a unique nave today in ruins, a choir and a semicircular apse. The nave, whose only lateral walls and western facade remain, opens with a typical 12th century sculpted portal. The choir, closed by a modern wall, houses remains of medieval murals, including a Christ in majesty surrounded by symbolic animals and a Madonna nursing on a background of rosettes.
According to a local legend, a knight returning from the Holy Land, exhausted, was rescued by a hermit named Guillaume. In thanks for his healing, he would have vowed to erect a chapel on this place. This account, although not verified historically, illustrates the pious and symbolic origin of the monument, classified by decree of 10 April 1990.
The architectural and decorative elements still visible, such as the Romanesque portal and frescoes, bear witness to stylistic evolutions between the central and late Middle Ages. The chapel, although partially in ruins, remains a significant example of the rural religious heritage of the Poitou-Charentes region, now integrated into New Aquitaine.
