(7 October 1914 - 25 April 2003) was a Swiss Catholic clergyman who lived in Rwanda for nearly fifty years.

On 2 December 1947 he left for Burundi, where he learned the local language while serving in missions at Kiganda and Kibumbu.

On 18 December 1955 he was elevated to Bishop by Pope Pius XII, and became Vicar Apostolic of Nyundo (Kabgayi) on 25 March 1956.

"[3] In a context of strong tensions between the subordinate Hutu majority and the Tutsi elite, these remarks reinforced the support of the Rwandan Catholic Church for the claims of the Hutus for compensation.

His letter came after the Tutsi-supremacist "Statement of Views", the Hutu-supremacist "Bahutu Manifesto" and the Voici les details de l'histoire.