- Birth Date
- 20 July 1845
- Death Date
- 4 August 1894
William Abraham Halladay
- Age at Departure: 6
- 1850 Iowa Census, Pottawattamie County.
- 1860 Utah Census, Utah County.
- 1870 Utah Census, Utah County.
- 1880 Utah Census, Utah County.
- England Births and Christenings, 1538-1975
- Find a Grave (Website)
- Halladay, Abraham, Autobiographical sketch, in 34th Quorum, Biographies, 1857-1875, vol. 2, in Seventies Quorum, Records, 1844-1975.
- Utah State History Cemeteries and Burials Database.