When Nellie Allison was born in October 1884, in Cass, Nebraska, United States, her father, James Allison, was 45 and her mother, Mary C. Becker, was 25. She married John Henry Grant Hasenyager on 15 March 1904, in Rock Bluff, Cass, Nebraska, United States. She lived in Rock Bluff, Cass, Nebraska, United States for about 15 years. She died on 24 August 1938, in McKenzie, North Dakota, United States, at the age of 53, and was buried in Watford City, McKenzie, North Dakota, United States.