 On 1 April 1903 he became the Bishop of Guarda, and on 1 October 1914 he became Archbishop of Braga.In Braga in 1923, Manuel Vieira de Matos and Dr. Avelino Gonçalves founded the largest Scouting organization in Portugal, the Corpo Nacional de Escutas - Escutismo Católico Português (CNE).In 1929 the organization was accepted as member by the World Scout Bureau.