From the Koreshan Archives:
OCTOBER
Just as last month marked the birth of one of the lesser known Koreshan, this month marks the birthday of one of the most prominent Koreshans — “Professor” Ulysses Grant Morrow, the man who “proved” the Cellular Cosmogony. The KSHS Archives has numerous references to Prof. Morrow. He was born in Kentucky and later moved to Missouri. It is unclear when or where he joined the Koreshans, however, the Rahn Membership List shows the following: 
Ulysses G. Morrow; Born: 26 Oct 1864 in Barren Co., Kentucky; as a boy moved with his parents to Unionville, Missouri, in 1885. He had a Ph.D. from “College of Higher Science,” Chicago; withdrew from the K.U. at Estero, January 31, 1909, about a month after the death of Dr. Teed, in December 1908. This resignation must have actually taken place earlier than that, however, since the Flaming Sword of December 15, 1908 mentions tht changes will be taking place in the publication due to “the resgination of Professor Morrow… While he belonged to the Unity he authored part of the book The Cellular Cosmogony as well as editing the Flaming Sword and the Salvator and the Scientist. However, when he eventually came to a disagreement with Dr. Teed and he left the Koreshan Unity, his writings remained in the book, only without credit. Writing to a Koreshan in 1938, Morrow said:
“When I withdrew from the Koreshan work, I made this declaration… ‘I will follow no man…” He also said “I have nothing to say against him. (Teed) …I became conscious of the fact that he was losing that high conception (of righteousness) and was failing in various ways, as his last few years fully attest. …If I passed him in progress, it was his fault”
He also said that when he left he took bound copies of all his writings, but later discarded them because of his desire to begin anew. He worked as a linotype operator in order to make a living. Morrow died in New Orleans on September 11, 1950.