Father:
- Owen Showalter (*1851 - †1918)
Mother:
- Catherine M. Troster (*1866 - †?)
Siblings:
- Daniel Edwin Showalter (*1888 - †?)
- Benjamin Harrison Showalter (*1890 - †?)
- Fred Showalter (*1895 - †?)
- Inez Pearl Showalter (*1897 - †?)
Wife:
- Caroline A. Dietsch (*1888 - †1959)
Branch:
Note:
a) GEDCOM file: Swabian Kastlers.ged