Brigham Young was born in rural Vermont, but in the film he is played by a British actor with a prominent and proper British accent.
Bishop Samuelson has a flashback of his participation in the destruction of the Nauvoo Expositor. It is shown being torched as if by a mob, but in fact, it was the city council who ordered the newspaper destroyed and was done in a peaceable manner.
Emily Hudson is a main character in this film. In reality, the Hudsons left the wagon train before it reached Utah.