Data researcher is Doug Mumma.
David is listed in the local histories as being a member of the Middletown Fire Company which was organized in 1849.
http://rootsweb.com/~ohmidcem/Middletown_Pioneer_Cemetery/MPhotos/MUMMA_David_1824_1879.jpg
1850: Census, Madison, Butler, Ohio
*** Family 173
Hyram Hinkle, 33, b: OH, miller, $4000 real estate
Amanda Hinkle, 31, b: PA <==== sister of Daniel and David Mumma
George Hinkle, 10, b: OH
John Hinkle, 8, b: OH
Andrew Hinkle, 6, b: OH
Caroline Hinkle, 4, b: OH
Caroline Smith, 20, b: OH
George Peacher, 28, b: VA
*** Family 174
Daniel Mumma, 26, b: PA, farmer. $8500 real estate
Caroline M Mumma, 21, b: PA
Florence Mumma, 0, b: OH
Lemuel Garret, 25, b: OH
Moses Wetzel,14, b: OH
*** Family175
David Mumma, 26, b: PA, miller, $4000 real estate
Elizabeth E Mumma, 21, b: OH
Samuel S Mumma, 0, b: OH
1860 Census: Madison, Butler, Ohio
David Mumma 35, b: PA
Ellen Mumma 31, b: OH
Samuel Mumma 11, b: OH
Anna M Mumma 4, b: OH
Mary C Ark 11, b: OH
Martin Goble 24, b: OH