Charles Mutin
1912

From Organs of Paris website:
1788François-Henri Clicquot had a profound impact on the organ of St-Leu-St-Gilles. He added the concave wings to the case of the great organ. Apart from a part of the case that he took over, it is very likely that he renewed all the piping and mechanics.1867In 1867, Suret modified the organ:•Added an expressive keyboard with 6 stops but speaking only on part of the keyboard.
•Removed both the Récit and Echo keyboards accordingly.
•Changed the composition of some keyboards: for example, Suret removed 3 to 4 stops from the positive to install two eight-foot stops and move the oboe to the new expressive Swell.
•Changed the keyboards on the console, to make it easier for the organist to play. Nevertheless, Suret retained most of Clicquots mechanics (including windchests) and much of the sound material.1911-1912Mutin intervened in 1911-1912, probably to repair some damage done by the Paris Commune (disappearance of certain stops?) and to make some adaptations: removal of the French-style pedalboard (apparently kept by Suret), revoicing of the Plein Jeu, possible addition of harmonic reed stops, etc.

Throughout the twentieth century, the organ underwent no intervention and its condition slowly deteriorated. Running out of steam in 1967, the organ suffered major damage in a fire in 1974. And what wasn't destroyed by fire and heat was likely to be damaged by the water used to extinguish the fire. Since then, the organ has been completely unplayable. An association was founded in 2012 to raise funds for a restoration, which is now scheduled for 2025-2027 (set aside that still 650.000 euros have to be found to finance this project).

The organ has 14 stops that predate the Revolution (11 complete, 3 partial), 9-10 Suret stops and 2 Mutin's stops.