I'm related to the Moulder's and they are my brickwall at this time. I have the Family Tree Maker Marriage CD for 1789-1850 Ohio. Drusilla Moulder married William Fitzer in Scioto Co. Ohio. I then noticed that Mary Mouler married Jackson McFann in Lawrence Co. Ohio, Lawrence and Scioto are next door to each other. I remembered that I saw a Dennis McFann living with Drusilla and William Fitzer. I'm betting that Drusilla and Mary are sister's. Also a John Moler married Mary Jane Mathews in 1849 Scioto Co. Ohio and Elizabeth Moler married Abraham Sisler in Scioto in 1850. Source Listed for the marriage of Mary and Jackson is Family History Library, Salt Lake City film #0317716.
The names of the Fitzer's were William, Drusilla, Sarah Ann, Mary Ellen, Levi, Melcena Y., Martha J., Laura Drusilla, Joshua H., John A., Henry A., William F., and George. Drusilla died 9-23-1866 in Cass Co. In Willam then married Elizabeth McCrum Staggs and they had Arena Blanche Fitzer born 1876 William died 1878.
I hope this helps and I sure would like to exchange info with you. Which family are you researching? I tried your website and couldn't get on.