Data source is the pamphlet, "Genealogy of One Branch of the Jacob Mumma Family", written by Ellen Landis Mumma in 1970.
Fannie and Joseph Hersh and children are listed in the Brubacher Genealogy in America, 1884, p. 195
http://ia700303.us.archive.org/33/items/brubachergenealo1884brub/brubachergenealo1884brub.pdf
1840 Census, PA, Dauphin Co., Derry Twp., p. 200
Widow Muma, 1 male under 5, 1 male 5-9, 1 female under 5, 1 female 5-9, 1 female 15-20 (probable error in Widow Muma's age - should have been 20-30).
1850 Census, PA, Daupihin Co, Derry Twp., p. 133, 29 Aug 1850
Fanny Mumma, 41, b. PA
Elizabeth " , 19, b. PA
Fanny " , 13, b. PA
1860 Census, PA, Lancaster Co., East Hempfield Twp., p. 300
Henry Hersh, 50, laborerr, $1000 real estate, $200 personal, b. PA
Anna " . 40. b. PA
---- in the same household
Joseph Hersh, 24, laborer, $1650 personal, b. PA
Fanny " , 23, b. PA
John " , 2, b. PA
Joseph " , 1, b. PA
Loucsa Beasal, 11, b. Germany
Fianna Walter, 16, domestic, b. PA