Complex sentence: Shingzie Howard, who played Rena, also of mixed race, had previously starred in Micheaux's films "The Virgin of the Seminole" and "Uncle Jasper's Will".
Split into simpler sentences: Shingzie Howard, who played Rena, was also of mixed race. She had previously starred in Micheaux's films "The Virgin of the Seminole" and "Uncle Jasper's Will".