| Saint Ghislain - Initial Church Patron | Venerated until the 1960s. |
| Pierre Vanacker - Curé (1848–83) | Financed the repairs despite the conflicts. |
| Charles Leroy - Reconstruction architect | Directed the works in 1872. |
| Jean-Baptiste Corsin - Former Mayor of Hellemmes | Sponsor of the bell *Marie Louise* (1812). |
| Frères Damiens - Organ factors | Authors of the organ (1875–77). |