Franklin initially traveled to the Salt Lake Valley with the Brigham Young Company in 1848 with his parents, Edwin Dilworth and Mary Wickersham Woolley, and his sisters, Rachel Emma and Mary Louisa. Mary Louisa was born on 5 July, while the company was camped at Goose Creek. Also in the company was his aunt and uncle, Samuel Amos and Catherine Elizabeth Mehring.
When the family made it to the Salt Lake Valley, they ate with his father's brother, John Mills Woolley, who had traveled to the Salt Lake Valley the year before with the Abraham O. Smoot/George B. Wallace Company in 1847, according to Rachel Emma Woolley Simmons’ Biography.
Franklin's name appears in the Utah Territorial Militia records beginning in March of 1851.
At the end of a recruiting mission, he traveled home with the Abraham O. Smoot Company in 1856 as indicated in his autobiography.
He later participated as one of the rescuers that were sent out in the winter of 1856 to assist the members of the Church stranded in Wyoming.