author
b. 1865
A French novelist and dramatist whose work moved between light social satire, historical themes, and popular fiction, he published steadily from the late 1890s into the 1920s. His books include collaborations with Henry de Gorsse as well as novels such as Le Rubis de Lapérouse and Hirondelle de Savoie.

by Gérard de Beauregard, Louis Charles Eugène Joseph de Fouchier
Born in 1865, Gérard de Beauregard was a French writer remembered as both a novelist and a dramatist. Library and literary reference pages agree that he belonged to the generation of French authors active across the late 19th and early 20th centuries, and Wikisource gives his lifespan as 1865–1951.
His known works show a varied career. Among the titles linked to him are Petit manuel de la femme supérieure, Les Maréchaux de Napoléon, Le Rubis de Lapérouse, Hirondelle de Savoie, and L'amour dominateur. He also collaborated with Henry de Gorsse on books including Le Roi du timbre-poste and Les Plumes du paon.
The surviving record online is stronger for his publications than for his personal life, but that bibliography suggests a writer comfortable moving between witty, accessible prose and more adventurous or historical storytelling. No clearly verified portrait image was available from the sources I checked.