In the 1880 US Census for District 134, Bridgeport, Fairfield County, Connecticut Sarah Brotherton was enumerated with the family of her daughter Florence, as follows:
Dwelling #96; Family #156 (56 Elm Street)
Stillman, Florence; W; F; 31; Married; Hairdresser; b. Connecticut; Both parents b. Connecticut
Stillman, Harry; W; M; 4; Son; Single; b. Connecticut; Both parents b. Connecticut
Barnum, Sarah; W; F; 62; Mother; Widowed; Keeping house; b. Connecticut; Both parents b. Connecticut