I looked up female Wallace listings in the Buffalo directory for 1890 and found: Emma Wallace 325 Penn. Ave FL Wallace(could be female) clerk 30 Board Trade Bldg and 447 Prospect Avenue Hattie Wallace 95 Canal Nellie J Wallace 29 Coe This would only be of help if her name was Wallace and she was the head of the household. Usually, during this time, if someone was married, the husband would have been mentioned or she would have been Mrs. So and So. She very well may have been unmarried. Good luck