Geoffroy de Loudon was a 13th-century Catholic bishop who served the diocese of Le Mans from 1234 until his death in 1255. Likely originating from Loudun, he held the position of prior at Saint-Tutuarn starting in 1148. During his tenure as bishop, he addressed a lack of initial resources by constructing the church at the chartreuse du Parc-en-Charnie. He is recognized as a saint within the Catholic Church and is commemorated on August 3.
Life and work

Serving as the bishop of Le Mans for over two decades, Geoffroy focused on expanding the local religious infrastructure. He commissioned the building of the church at the Parc-en-Charnie chartreuse to compensate for insufficient early donations. His remains were kept in this church, where they became a site for many pilgrims, until the French Revolution occurred.
Veneration
The Catholic Church recognizes him as a saint. His feast day is observed annually on August 3. Because of his historical importance and the presence of his relics, he drew significant numbers of pilgrims to the Parc-en-Charnie location for many centuries.
