Roger Francois Lotte was French archetier

Archetier

A bow maker is a person who builds, repairs, and restores ancient or modern bows for instruments of the violin family. These include violins, violas, cellos, double basses, viola d'amore, viola da gamba, etc....

/ bow maker, son of Francois Lotte

Francois Lotte

Francois Lotte was a French archetier / bow maker.Son of George Lotte who was a luthier/violin maker in the Vuillaume shop. Francois Lotte received his training in the best French tradition, initially apprenticed with Bazin....

 and Margueritte Ouchard

Emile Francois Ouchard

Emile Francois Ouchard was a bow maker for stringed instruments / Archetier from Mirecourt, Vosges, France. Ouchard was also known as "Ouchard Père".-Biography:...

.
Studied the art of bow making with his father and took over his shop around 1960. He made bows for: George Deblaye, Dupuy, Léon Mougenot, E. Vatelot, Roger & Max Millant and Bernard Millant

Bernard Millant

Bernard Millant is a world renowned bow maker / archetier and luthier in Paris, France. He is the son of Max Millant.He studied violin making at Amédée Dieudonné's workshop in Mirecourt...

amongst others.
His best bows made entirely by himself are stamped: Roger François Lotte and sometimes Roger Lotte.
"Some of the bows from 1965-1970 mounted in gold/tortoise-shell are stunning".