In addition to HAMMAN and SCHENDEL, I am researching other surnames such as: HELFRICH, HEIFNER, KINDIG, WORDEN, ROTHNER, SUMMERS, HOLZMAN, MOORE, WEBB, KAIN, and DACHNER.
In particular, I need information on the ancestors of James E. Hamman,who was born in August 1873 in Ohio, married to Arminda Heifner, and had twin brothers named Harry and Harvey born n 1863.Their wives respectively, were Angie and Alice.
The primary states of interest for Hamman, Helfrich, Heifner, Kindig and Worden are Ohio and Pennsylvania prior to 1880.The states for Schendel, Rothner, Holzman and Summers are Missouri, Oklahoma, Texas and Ohio prior to 1880.For Dachner and Kain, the primary state is Ohio for any date.Illinois is the primary state of interest for Moore and Webb.
Germany and the Netherlands are of great interest for the names Hamman, Schendel, Heifner, Helfrich.
I have a fair amount of information to share, and to add to as appropriate.