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Msgr Jack Egan was a prominent chaplain of the YCW and CFM in Chicago, who also worked closely with Saul Alinsky and marched with Martin Luther King.
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Maryknoll Fr Tom Danaher was chaplain to the Hong Kong YCW and active in social ministry there.
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Albert Danker was a South African Oblate of Mary Immaculate, who was chaplain to the South African YCW.
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Leo Davis was a YCW and YCS chaplain from San Diego Diocese, who also founded the Cardijn Center there.
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Bishop Emile-Joseph De Smedt worked closely with the Flemish jocist movements and was a significant ally of Cardijn at Vatican II.
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Bishop Emilio Antonio Di Pasqua was one of the founders of the JOC in Argentina.
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Msgr Francisco Berisso was a well-known chaplain to the JOC in Avellaneda, Argentina.
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Victor Dillard was a French Jesuit, who was sent to Germany under the Compulsory Labour Service regime, where he acted as a chaplain to JOC and other Catholic Action groups before being arrested and eventually sent to Dachau where he died.
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Rodolfo García Escamilla was the founder of the JOC and Christian Workers movements in Mexico and was murdered by a death squad in 1977.
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Archbishop Len Faulkner was a YCW chaplain in Adelaide, Australia, who later became episcopal delegate to the YCW for the Australian bishops.
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Cardinal Josef Frings supported the establishment of the CAJ (German JOC) in the aftermath of World War II. He played a significant role at Vatican II.
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Henri Godin was a French priest and JOC chaplain who co-authored a famous book "France: pays de mission?" (Is France a mission country?) and founded the Mission de Paris.
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Cardinal Gabriel-Marie Garrone was an important promoter of Specialised Catholic Action as a seminary professor and later as archbishop of Toulouse and at Vatican II.
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Jean-Marc Gaspoz was a Swiss Capucin priest, who served as a JOC chaplain in France, Seychelles and Zambia before becoming international chaplain of the IYCW.
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Lucio Gera was an Argentine priest and JOC chaplain, who became known as a founder of the "theology of the people."
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René Giraudet was a French Paris Foreign Mission priest who volunteered to serve in Germany under the compulsory labour service regime leading to his arrest for acting as a priest and eventual transfer to Bergen-Belsen and later his death.
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Once a member of the Sillon, Georges Guérin entered the seminary after World War I and became the founding chaplain of the French JOC.
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Palémon Glorieux was a prominent theologian, who co-founded the JOCF in the Lille diocese. He acted as advisor to Cardinal Achille Liénart at Vatican II.
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Jacques Grand'maison was a Canadian JEC and JOC chaplain, who later became an advisor to the Canadian bishops.
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Emile Guerry founded the JOC and the JAC in the Diocese of Grenoble. As archbishop of Cambrai, he continued to support the Specialised Catholic Action movements, including at Vatican II.
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Msgr Reynold Hillenbrand was national chaplain to the US YCW and noted liturgical reformer.
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A Specialised Catholic Action chaplain in Namur, Belgium, Charles-Marie Himmer became the bishop of Tournai and a prominent supporter of Cardijn at Vatican II.
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Fr Joseph Ho was national chaplain to the Singapore YCW.
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Archbishop Denis Hurley was a disciple of Cardijn and a significant ally at Vatican II.
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François Houtart was a JOC chaplain and close collaborator of Cardijn and the movement. As a peritus at Vatican II, he prepared the first draft of the introductory statement on the situation of people in the world for Gaudium et Spes.
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Alberto Hurtado was a Jesuit pioneer of Catholic Action in Chile, who studied at Louvain.
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Jean Jadot was a Belgian JEC chaplain, who later became a Vatican diplomat. He also collaborated with Cardijn during Vatican II.
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John F. Kelly was a Melbourne priest, who discovered the JOC through his reading of French literature. He translated many articles into English and edited the YCW Leaders Bulletin for many years.
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Robert Kothen was president of a study circle of the Jeunesse Syndicaliste before entering the seminary. As a priest, he became Cardijn's assistant responsible for international relations during the 1930s.
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Fr Eugene Langdale was a pioneer of Catholic social work in England, who translated many of Cardijn's writings into English.
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Bishop Manuel was a major promoter of the JOC and other Specialised Catholic Action movements and a close collaborator of Cardijn at Vatican II.
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Louis-Joseph Lebret was a French Dominican priest, who founded the Jeunesse Maritime Chrétienne (JMC) on the JOC model, and later helped draft Pope Paul VI's encyclical Populorum Progressio.
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Fr Frank Lombard was the founding chaplain of the Melbourne and Australian YCWs.
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Cardinal Joseph Malula was a JOC and Ligue Nationale de Travailleurs Chrétiens chaplin in the former Belgian Congo. As a bishop he took part in Vatican II and participated in the drafting of Gaudium et Spes.
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Jean Margéot was the founder of the JOC in Mauritius.
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Fr RV Mathias was chaplain to the Indian YCW and later to the International YCW.
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Marcos McGrath was a CSC father, who became archbishop of Panama City. At Vatican II, he was presided over the Signs of the Times Sub-Commission, which adopted the See-Judge-Act method.
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Jean Ménard was member of the Canadian JEC, who later became a missionary priest and JEC chaplain.
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Fr Ted Mitchinson was an English YCW chaplain who also worked with the movement in South Africa. He also translated the Fiévez-Meert biography of Cardijn into English.
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Msgr Marvin Mottet, a former director of the Catholic Campaign for Human Development, started his life of social action following his youthful experience of YCS as a student at St Ambrose University in Davenport, Ohio.
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Carlos Mugica was an Argentinian Jesuit worker-priest, who was also a JEC chaplain. He was assassinated in 1974.
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Yves de Montcheuil was a French Jesuit theologian, a JOC chaplain and a member of the French Resistance during World War II. He was captured and shot in August 1944.
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Hugh O'Sullivan was an Adelaide priest, who worked as Adelaide, Australian and International YCW chaplain.
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David Ogilvie-Forbes O.S.B. was an English Benedictine priest, who was also well-known chaplain to the YCW in Warrington.
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Jorge Parisotto was national chaplain to the Brazilian JOC during the dictatorship period of the 1960s and 1970s and later regional chaplain for the Americas.
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Gaston Pineau was a French priest, who was a chaplain to the JOC, JOCF, the Mouvement Populaire de Familles (MPF) and the Action Catholique Ouvrière (ACO).
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Roger Poirier was a Canadian Oblate of Mary Immaculate, who became diocesan chaplain of the Montreal JOC and later the Quebec JOC.
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Mexican Jesuit Blessed Miguel Pro attended the first National Congress of the JOC in 1925 while studying in Belgium. He was later executed by the Mexican anti-clerical government on trumped up charges.
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Ecuadorian Bishop Leonidas Proaño founded the JOC in Riobamba in 1954. Later he worked extensively with indigenous communities and was a Council Father at Vatican II.
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Louis Putz was a German-born American CSC father, who learned the jocist method in France, and was a pioneer chaplain for the YCW, YCS and CFM movements in the USA.