Notes:
This is a second marriage for Jonathan. He had children from his previous marriage to Frances Tice who died in 1871. Barbara Mumma is 40 years old at the time of her marriage to Jonathan.
Note, the Groff book incorrectly identifies Barbara as "Maria Barbara Mumma, b. 9 Feb 1827, d. 18 Oct 1887". That book has her name incorrect as well as her birrth date. This is verified by the 1880 census shown below.
1880 census MD, Washington Co., Hagerstown, 3rd ED, 17 June
Schindel, Jonathan, age 60, farmer, b: MD/-/-
" . Barbara A., 44, wife, keeping home, b: MD/MD/MD
" , Mary K., 18, dau, at home, b: MD/MD/MD