Magic lantern slide circa 1900.Victorian.Social History. S.P.G. Priests. A visionary priest called Thomas Bray was granted a Royal Charter to set up a society that would send Church of England priests to settlers in America. He called this new organisation the Society for the Propagation of the Gospel in Foreign Parts (SPG). This was the start of a story that is also a part of global history. Rev, P. Tsimalanja ( sittting ) and J. Andriamaitso,Priests of the Northern Church in Madagascar, missionary work.