 Between the first and second sessions of the Council, Archbishops Marcel Lefebvre (Superior CSSp) and Geraldo de Proença Sigaud (Diamantina, Brazil) and Bishop José Maurício da Rocha (Bragance, Brazil) decided to organize a more formal group of like-minded bishops.The group soon established a steering committee, of archbishops Lefebvre and Proença Sigaud, bishops Luigi Maria Carli (Segni), Antônio de Castro Mayer (Campos, Brazil).and the Abbot of Solesmes, Jean Prou OSB.