| Benjamin Dewarlez - Lille architect | Author of the first project rejected in 1812. |
| Louis-Pierre Baltard - Architect | Made a sketch for the project. |
| Théodore Henri Vallez - Architect | Designed the final neoclassical church. |
| Alexandre Grimault - Architect | Finished the interior decor in 1849. |
| Cambreleng - Entrepreneur | Collaborated in the dressing of the choir. |
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