During the first year of the German occupation, Viannay married the former Hélène Mordkovitch. Hélène Viannay co-administered Les Glénans with her husband, and following Viannay's death became president of the association of Ancient Résistants of Défense de la France.
Prix Philippe Viannay-Défense de la France
The French Fondation de la Résistance awards an annual prize for resistance-era histories, the Prix Philippe Viannay-Défense de la France.