St. Athanasius is known as one of the greatest champions of Catholic doctrine to have ever lived, earning the title, "Father of Orthodoxy." St. Athanasius was later declared a Doctor of the Church. He is credited with the formulation of the Nicene Creed. For more information on St. Athanasius please see - https://www.catholiccompany.com/morning-offering/2019-05-02/