By the early 1960s, the movement had assembled a good number of catechists, acolytes, and believers in a spiritual return of Jesus Christ. The continuous expansion of this movement coupled with its belief in Simeo Ondetto as the returned Son of God led to theological tension, and eventual break with the lay Catholic movement, the Legion of Mary. Legio Maria was legally registered in Kenya in 1966 as a church, expanded massively in the late 1960s, 1970s, and 1980s, and eventually spread to many countries in Africa, including Uganda, Tanzania, Congo, Zaire, Rwanda, Ethiopia, Sudan, and Nigeria. In 1966, one of its founders, Mama Maria, died and was buried at Efeso Church, in Nzoia, Siaya County, while the principal founder, Simeo Ondetto, died in 1991 and was buried in Got Calvary, in Migori County.