,My great-grandmother was Mary Catherine Knepp,born 21 January 1857 in what is now Snyder County,PA. She was the daughter of Jesse and Sarah Ann Kline Knepp. I have the names of 10 children born to Jesse and Sarah Ann. There was a boy named John Henry Oliver Knepp who I believe married a Josephine Haas.
The father of Jesse Knepp was Henry Knepp,Jr. Henry Knepp Jr was born 2 November 1799 somewhere in PA. and he died 7 November 1875 in Snyder County and is buried at St. Paul's, Black Oak Ridge, Snyder County,PA. Jesse is the only child I have listed, but I can only assume that there were more children. Jesse was born 12 May 1826 in Union County, (now Snyder County) PA.
If you feel there may be some connection, since Mifflin County and Snyder County are so close, please let me hear from you.