Nancy cash-claimed a quarter in 10, 7N 48W in 1890. That's the same year as Charles in section 34, but about five miles away. She was delinquent on taxes in 1890.
Possibly she's the Nancy Wilson in 1900 Denver, married to Joseph. Both were born in Canada Joseph August 1847 and Nancy May 1853, with Nelson M. Feb 1887, also Canada. Joseph is a brick contractor. Later in Denver they have a servant, so might have been prosperous.
Buried in Crown Hill, Wheat Ridge are Joseph Aug 31, 1847-Jan 14, 1922 and Nancy May 29, 1853 -March 29, 1931.