Prof. Dr. Jean Cachon, 1922-1989, Protistologist at Laboratoire de Protistologie Marine, Villefranche-sur-Mer, who often published on Actinopoda together with his wife Dr. Monique Cachon, 19??-. She seems to have begun publishing under the name M. Enjumet during the 1950s, changed later name to M. Cachon-Enjumet, but from the late 1960s as M. Cachon only (http://www.tmbl.gu.se/libdb/taxon/personetymol/petymol.c.html )