Notes:
1870 Census PA, Allegheny Co. Pittsburgh, 7th ward,
Mumma, Sol, 45, clerk ?? store, b. MD
" , Susan, 37, keep house, b. MD
" , Sadie, 19, b. PA
" , Alice, 15, b. PA
" , Izetta, 11, b. PA
1880 Census, PA, Allegheny Co., Pittsburgh, ED 106, dwelling 77
Mumma, Solomon, 55, watchman RR, b. MD/MD/MD
" , Susan, 48, wife, house keeper, b. MD/TN/MD
" , Sarah E., 27, dau, married, at home, b. PA
" , Izetta, 18, dau, single, at home, b. PA
Simpson, W.L.Dr., 33, son-in-law, married, physician, b. PA/PA/PA
1900 Census, PA, Allegheny Co., Pittsburgh, Wilkinsburg Borough, p. 205A, ED 534, 312 Biddle Ave, dwelling 312
Thome, Robert J., Jr., head, b: Oct 1861, 38, m: 19 yrs, b: PA/NY/NY, grain merchant
" , Ireta M., wife, June 1862, 37, m: 19 yrs, 3 children, 2 living, b: PA/MD/MD
" , William D., son, Mar 1888, 12, single, b: PA/PA/PA, at school
" , Gerrit, son, Oct 1893, 6, single, b: PA/PA/PA, at school
" , Robert J. Sr., father, apr 1818, 82, widowed, b: NY/NY/NY, insurance agent
Mumma, Susan, mother, July 1834, 65, widowed, 1 child, 1 living
There is a significant error in the birth year of Izetta in the Pennsylvania Death Records. That document lists her birth year as 1864, but she is recorded in the 1860 census as 1 years old and as 11 years old in the 1870 census. In 1880 she lists herself as age 18 and the 1900 census states she was age 37 and born in June, 1862. Not sure why the error.. Her sister, Sara, was the informant.