The Französisches SS-Freiwilligen-Grenadier-Regiment was formed in August 1943 from French volunteers, many of the from the various right-wing militias that existed in France.
It was redesignated Französische SS-Freiwilligen-Sturmbrigade in July 1944.

Commanders     

SS-Oberstrumbannführer Payl Gamory-Dubourdeau (? Aug 1943 - ? July 1944)

Sources used

Richard Landwehr - French Volunteers of the Waffen-SS
Kurt Mehner - Die Waffen-SS und Polizei 1939-1945

Reference material on this unit

André Bayle - Von Marseille bis Nowosibirsk
Robert Forbes - Pour L' Europe.The French Volunteers of the Waffen-SS
Richard Landwehr - French Volunteers of the Waffen-SS
Richard Landwehr - Charlemagne's Legionnaires: French Volunteers of the Waffen-SS, 1943-1945
Christian De La Mazière - The Captive Dreamer
Christian De La Mazière - Ashes of honor
Jean Mabire - La division Charlemagne
Jean Mabire - Mourir à Berlin
Marc Augier aka Saint-Loup - Götterdammerung