Notes:
Josiah and Aaron Mumma are listed in the 1850 and 1860 census of Warwick as being the same age, so they were either twins or one was born at the beginning of the year and the other at years end. The surname is these census is Mumma
1870 Census, PA, Lancaster Co., Warwick Twp. 6 July 1870
Mumma, Josiah, 26, Farmer, b. PA
Mumma, Sarah, 20, keeping house, b. PA
Mumma, Lizzie, 11/12, b. PA
1880 Census, PA, Lancaster Co. Warwick Twp. (surname was transcribed as Mumau or Muman)
Muman, Josiah, 35, farmer, b. PA
" , Sarah, 29, b. PA
" , Susanna, 9, b. PA
" , John, 6, b. PA
1900 Census, PA, Lancaster Co., Warwick Twp., p. 191
Mumma, Josiah, head, Nov 1844, 55, m 31 yrs, b. PA/PA/PA, Farmer
" , Sarah, wife, Feb 1850, 51, m 31 yrs, 4 children, 3 living, b. PA/PA/PA
" , Jacob, son, Oct 1882, 17, single, b. PA/PA/PA, day laborer
----- next door -------
Mumma, John, head, Feb 1874, 26, m 7 yrs, b. PA/PA/PA
" , Lizzie A., wife, Jan 1872, 28, m 7 yrs, 3 children 3 living, b. PA/PA/PA
" , Della May, dau., Apr 1894, 6, single, b PA
" , Leroy G., son, Nov 1896, 3, single, b. PA
" , Margie Irene, dau, Mar 1899, 1, single, b. PA
1910 Census, PA, Lancaster Co., Warwick Twp.
Mumma, Josiah, 64, m: 44 yrs, b. PA
" , Sarah, 60, m: 44 yrs, 4 children, 3 living, b. PA.
1920 Census, PA, Lancaster Co., Warwick Twp.
Ecenroad, John, head, 48, b. PA
" , Susannah, wife, 48, b PA
Mumma, Josiah, father-in-law, 75, widow, b. PA