According to this flag's designer... "The LDS church created and displayed 'The Church Flag' (a.k.a. The Mormon Pioneer Flag) in the 1800s. One account of its display was during the first Utah Pioneer Day in July of 1849. The 'Church Flag' was unfurled and raised in a celebration on Ensign Peak in Salt Lake City.
crwflags.com/fotw/flags/rel-morm.html
Unknown authorUnknown author