Frank; There is a Dorfsippenbuch for Thalexweiler that you may be able to find: Familienbuch zum Kirchenbuch by Gerhard Storb, printed at Lebach, 1982. This is the compiled parish records of St. Albanus at Thalexweiler. I have references (but not the books) for over 500 of these books, and Illingen, Eppelborn and Marpingen are not listed. If you write German, post a query on the proper German state's genpage asking for a lookup and there is a fair chance that you will get a response. I have both asked and "looked-up," and it worked for me and others. Vincent Falter Hope that this helps!