Neils Otto Mortensen was born 2 July 1817 in Lidstrup, Maribo, Denmark to Morton Nielsen (1787-1853) and died 7 April 1912 Parowan, Iron County, Utah of unspecified causes. He married Maren Kristine Olsen Hansen (1811-1862) 1863 in Parowan, Iron County, Utah.
Children
| Name | Birth | Death | Joined with |
| Anna Margaret Mortensen (1840-1875) | |||
| Hans Peter Mortensen (1844-1890) | |||
| Maren Mortensen (1853-1868) | |||
| William David Lewis (1860-1913) | |||
| Martin H Mortensen (1863-1863) | |||
| Niels Otto Mortensen (1865-1943) | |||
| Samuel Carson Mortensen (1867-1955) | |||
| Olive Melassa Mortensen (1869-1947) | |||
| Joseph Edgar Mortensen (1871-1937) | |||
Siblings
See Also
- William Richey (1796-1879) - was residing with Neils for several months when he passed away at his home in 1879.