First Lord of La Porte-Calon 1515 (≈ 1515)
Olivier Calon named as Lord.
1646
Acquisition by the Ursulines
Acquisition by the Ursulines 1646 (≈ 1646)
Purchase of La Porte-Calon mansion.
1704
Completion of the convent
Completion of the convent 1704 (≈ 1704)
Main body and wings finished.
1810
Secondary school
Secondary school 1810 (≈ 1810)
Managed by the municipality of Guérande.
1824
Establishment of the small seminar
Establishment of the small seminar 1824 (≈ 1824)
Order of Charles X.
1906
Closing of the seminar
Closing of the seminar 1906 (≈ 1906)
Law of separation Churches-State.
1966
Final closure
Final closure 1966 (≈ 1966)
End of use as seminar.
2001
Registration for historical monuments
Registration for historical monuments 2001 (≈ 2001)
Protection of heritage.
2018-2023
Restoration by François 1st
Restoration by François 1st 2018-2023 (≈ 2021)
Complete site rehabilitation.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
The façades and roofs of the Porte-Calon mansion, the facades and roofs of the Petit Séminaire and the 17th century structure (Box BI 39, 43): inscription by decree of 30 March 2001
Key figures
Olivier Calon - Lord of the Gate
First lord named in 1515.
Famille Secillon - Former owner
Breton lineed before 1646.
Charles X - King of France
Order establishing the seminary in 1824.
Origin and history
The convent of the Ursulines of Gerande is a former convent whose buildings, completed in 1704, form a large body with wings in return. A 19th century chapel completes the whole. Located in the Faubourg Saint-Michel, 600 metres from the medieval gate of the city, it is part of a historical environment marked by the proximity of the chapel Saint-Michel.
The convent originated in the Porte-Calon mansion, whose name refers to Olivier Calon, the first lord known in 1515. This mansion then passed to the Secillon family, originally from Vannes, before being acquired in 1646 by the Ursulines. They established their community there before building the current convent.
During the Revolution, the Ursulines were expelled, and the convent became a hospice for twelve years. In 1810, the commune established a secondary school there, but transferred it to the bishopric in 1823 for budgetary reasons. By order of Charles X, the site became a small diocesan seminary in 1824, a function it retained until 1906, the date of its closure after the law of separation of churches and the state.
During the First World War, the convent welcomed German and Austro-Hungarian nationals. He returned briefly to a seminary in 1922, before closing permanently in 1966. Joined historic monuments in 2001, it was bought in 2018 by the François 1er group, which carried out restoration work until 2023.
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