- Birth Date
- 2 November 1849
- Death Date
- 17 February 1938
Gertrude's father (Christopher) died in 1858 in Iowa. There is documentation that Gertrude traveled with her siblings (Mads Christian, Carl Marinus, and Soren Peter) to Utah. However, her mother (Mariane Madsen Christensen) is not listed in company sources. Therefore, at this time it is not clear when she (Mariane) came to Utah.
- Age at Departure: 10
- 1900 Utah Census.
- "Deaths: Gertrude C. Johnson," Salt Lake Telegram, 19 February 1938, 14.
- Denmark, Baptisms, 1618-1923.
- Emigration list for Spring, 1860.
- Journal History of The Church of Jesus Christ of Latter-day Saints, Supplement after 31 December 1860, 10.
- Saints By Sea: Latter-day Saint Immigration to America
- Utah State History Cemeteries and Burials Database.