Here is somemore info on your family. Olga Nielsen, your grandmother, was born 6 May 1869 in Malling, Ning, Aahus to Johannes Nielsen and Maren Christensen, age 40, opslag 143 nr 13. Here is the family in the 1880 census.
All persons in the household
Aarhus, Ning, Malling, Stornord By Malling Sogn, , -, 126, FT-1880
Name: Age: Marital status: Occupation in household: Occupation: Birth place:
Johannes Nelson 49 Gift Husfader og Snedker Sverrig
Maren Christensen 50 Gift Hans Hustru Torsted Sogn
Elge Nelsen 10 Ugift Deres Børn Malling Sogn
Albert Nelsen 8 Ugift Deres Børn Malling Sogn