Dear Allen,
In Oldenburger-Münsterland we have a lot of Schillmöller. But the only source I have at home is the register of birthes of tha parish Steinfeld. There is also a Elisabeth Schillmöller, but she is born 4.Dec.1817 in Steinfeld.
At my next visit in the archive in Vechta (two weeks) I will check also the other parishes.
Werner