At a more humble level, Pierre Aylagas of the Comité du Roussillon was a prominent referee in France, circa 1980, though never making it onto the 5 Nations Panel. He, too, took up a coaching role, as RCG suggests at a more local level. More notably, perhaps, he went on to become a politician and member of the Legislative Assembly.
I recall seeing him in action once, in a knockout match at a neutral venue, the Stadium in Valence. After the match I rushed back to the station to catch my traqin back North - and there he was on the opposite platform, waiting for his train back to Perpignan. Obviously a fast mover.