That was his real name. Irish / French. Survived the transition to sound. Got married in a spectacular way:
La Rocque met his future wife, Hungarian actress Vilma Bánky, at a dinner party at DeMille's home in 1925. When they married in 1927, it was a lavish affair in which DeMille served as best man. The wedding was attended by the creme de la creme of Hollywood society, and afterward, there was a reception for 2,000 at the Beverly Hills Hotel.
They stayed married until he died in 1969.