Hettenhausen and Schmitshausen now belongs to the political village of Wallhalben now part of Rheinland-Pfalz.
That time your ancestor emigrated both places belonged to the Kingdom of Bavaria. Bavaria got the Pfalz area in 1815. For more information look at: http://en.wikipedia.org/wiki/Palatinate_%28region%29
The catholic church of Hettenhausen and Schmishausen belongs to the Bistum Speyer and the Lutheran church belongs to the Protestantische Landeskirche Pfalz. For a research you have to know the cofession of your ancestors.
Hope this helps,