Additionally, they assumed control of two-thirds of the Mironnerie, a property constructed for François Myron [fr] (or Miron), who served as the general treasurer of Brittany and mayor of Nantes from 1578 to 1580.

In 1625, the city bestowed upon them the responsibility of administering the educational affairs of the Saint-Clément College, a position they retained until 1793, ultimately surpassing their rivals, the Jesuits.

[4] The architect responsible for its design was Jacques Malherbe, and following his demise, Gilles Corbineau [fr] assumed control of the project.

[3] Furthermore, Ceineray formulated the blueprint for the Hôtel le Lasseur [fr] in 1775, situated adjacent to the chapel on its southern facade.

[5] Following its designation as national property, the building served as the seat of the criminal court of Loire-Inférieure during the French Revolution.

Following the cathedral's reopening, the Chapelle de l’Oratoire served as a mortuary chapel for soldiers killed in the Indochina and Algerian wars.

[10] Between 25 September 2011, and the conclusion of 2013, the museum underwent an expansion, encompassing the incorporation of intermediate edifices that facilitated connectivity between its "historic" section and the Chapelle de l’Oratoire.