- Birth Date
- October 1830
- Death Date
- 8 August 1852
William, Jr. Mason
William, Jr. and his brother, George, sailed to the United States together in 1849 on the Henry Ware. His parents and brother, John, sailed to the U.S. a few years later.
- Age at Departure: 21
- Died en Route
- "20th Company," Deseret News [Weekly], 18 September 1852, 2.
- Browning, James Allen, Autobiography [ca. 1851-1883].
- Carling, Isaac V., [Diary], in Elda Mortenson, comp., Isaac V. Carling Family History , vol. 1, 48-55.
- George Mason autobiographical sketch, circa 1883, 1-3.
- Journal History of The Church of Jesus Christ of Latter-day Saints, Supplement after 31 December 1852, 125.
- Perpetual Emigrating Fund Company general files, 1850-1887.
- Saints By Sea: Latter-day Saint Immigration to America