阮淦
He was appointed Bishop of Nha Trang on 13 April 1967 and received episcopal consecration on 4 June 1967 at Huế from Angelo Palmas, Apostolic Delegate to Viêt Nam (and later Nuncio to Colombia and to Canada), assisted by Bishops Philippe Nguyễn Kim Dien, Apostolic Administrator, "sede plena", of Huế, and Jean-Baptiste Urrutia, titular archbishop of Carpato. On 24 April 1975, he was appointed Coadjutor Archbishop of Saigon. Six days later, Saigon fell to the North Vietnamese Army, and Thuận, targeted for his faith as well as his family connections to Ngô Đình Diệm, was detained by the communist government of Vietnam in a re-education camp for 13 years, nine in solitary confinement.