Leopold Engel (* April 19, 1858; † November 8, 1931) - was born in St Petersburg, Russia. His father was Karl Dietrich Engel (1824–1913), a violinist who in 1846 became Konzertmeister (leader) of the orchestra of the Imperial Russian Theatre. Leopold went to Germany he finally settled in Dresden where he wrote extensively on the Faust legend. He became a follower of Jakob Lorber (1800–64). In 1891 Leopold Engel heard an "inner voice" which commanded him to write an eleventh volume of Lorbers' work The Great Gospel of John.
During the 1890s Engel became involved with Theodor Reuss in reviving the Illuminati, setting up an irregular masonic lodge which they called the Ludwig Lodge. This and several other lodges they were active in were not recognised by any of the regular German Grand Lodges. This association came to an end on July 3, 1903 with Engel's expulsion along with his friend Siegmund Miller.