An entry for Reuben Perkes in the book, Pioneers and Prominent Men of Utah, states that Mary Ann Botright (Mary Burthwryte) traveled to Utah in 1868 in Simpson Molen's Company. Mary Ann Botright married Johnathan Flake following the demise of her first husband William Aldred. Family tradition and passenger lists state and indicate that they traveled together in 1868 with their children.
Jonathan was also referenced in an entry for Robert Reeder in the book, Pioneers and Prominent Men of Utah. The entry stated that Jonathan came to Utah with the Simpson Molen company.