A Coptologist. He was born in the Hague and studied theology and at Fribourg in Switzerland with Eugene Devaud and went to Egypt in 1920 as a missionary for the African Mission Society. In February 1921 he was ordained a in the Coptic Catholic and was assigned to the city of Zagazg. He built a typical Coptic church named after Saint Pachomius in the city of Faqus.

He contributed extensively to research in the history of the church, Bible studies, biographies of fathers, and related materials. He wrote in English, French, German, and Spanish. In addition, he mastered Coptic, Greek, Hebrew, and Arabic.

He published articles in both Arabic and European languages. One of his important contributions to is “Les Pelèrinages coptes Egypte” (ed. Gérard Viaud, Bulletin de l’Institut français d’archéologie orientale, 1979.


  • Dawson, W. R., and E. P. Uphill. Who Was Who in Egyptology, p. 211. London, 1972.
  • Kammerer, W., comp. A Coptic Bibliography. Ann Arbor, Mich., 1950; repr. New York, 1969.