They were called 3 Musketeers but they were 4 (1973 Tony Kandall)
Obscure costume adventure starring Tony Kendall, Ettore Manni, Stelvio Rosi, Carla Mancini, Ivano Staccioli, Seyna Seyn, Luciana Turina, and others. The Musketeers engage in several bawdy adventures while attempting to aid the oppressed. Always out to hinder them is the Cardinal Richelieu. Directed by Silvio Amadio. Dubbed in English.