Archbishop Marcel Lefebvre, was ordained to the priesthood on September 21, 1929, and consecrated a bishop on September 18, 1947, by (the late) Achille Cardinal Lienart, Bishop of Archbishop Lefebvre’s diocese of Lille (France).
Recently, it was revealed that Cardinal Lienart was apparently a Freemason. From this, certain naive persons with only the vaguest grasp of theological principles and with an obvious desire to interpret everything so as to confirm their own obsessive personal theories on the present crisis in the Church, have imagined that sacramental acts performed by the cardinal were invalid,
http://archives.sspx.org/archbishop_lefebvre/validity_of_holy_orders.htm
Recently, it was revealed that Cardinal Lienart was apparently a Freemason. From this, certain naive persons with only the vaguest grasp of theological principles and with an obvious desire to interpret everything so as to confirm their own obsessive personal theories on the present crisis in the Church, have imagined that sacramental acts performed by the cardinal were invalid,
http://archives.sspx.org/archbishop_lefebvre/validity_of_holy_orders.htm