- Birth Date
- 19 January 1824
- Death Date
- 20 June 1903
Harriet's family's travel to Utah in 1852 is confirmed by her obituary.
They sailed to America in 1852 on the ship Ellen Maria.
Her birth date is confirmed by her obituary.
- Age at Departure: 28
- "List of Persons Sent from Great Britain by the Perpetual Emigrating Fund Co., in the Months of January and February 1852, by Franklin D. Richards Agent at Liverpool," Deseret News, 21 August 1852, 3.
- "Pioneer Dead. Mrs. Harriett Emmett Riley Succumbs This Morning," Ogden Standard Examiner, 20 June 1903, 6.