On 12 May 1960, Pope John appointed Fr William Power, the national chaplain of the English-speaking Canadian YCW as the bishop of the Diocese of Antigonish.
Significantly, this diocese was the home to the Antigonish Movement, a Canadian cooperative movement with origins in the 19th century.
Bishop William Edward Power (Catholic Hierarchy)
Obituary Rev. William Edward Power (Newspapers.com)
Antigonish Movement (Wikipedia)
Race Mathews, Jobs of our own, Pluto Press, 1999.
On 6 February 1960, Pope John named Fr Joseph Goupy, who had been diocesan chaplain to the JEC (YCS) in the Diocese of Tours, as co-adjutor bishop of Blois.
Bishop Joseph-Marie-Georges-Michel Goupy (Catholic Hierarchy)
Dominique-Marie Dauzet et Frédéric Le Moigne (sous la direction de). Dictionnaire des évêques de France au XXe siècle. Paris, Éditions du Cerf, 2010, 307-308.
On 16 December 1959, Pope John appointed Fr Henri Gufflet as coadjutor bishop of Limoges, France.
Later he would be appointed as the prelate of the Mission de France.
Bishop Henri Marie Charles Gufflet (Catholic Hierarchy)
Territorial Prelature of the Mission de France at Pontigny (Wikipedia)
Bishop Gufflet with Mgr Denis Tapsoba (Diocese of Limoges)