Katie - I hope you find some information. In the meantime, you will notice that I changed your heading to one that will 'grab' people's attention. When people browse through the postings, they like to see where or whom the posting is about. So, I hope my headline will help you get some responses.Good luck!
Also, if you know whether your grandparents or great-grandparents were from Luxembourg, you could try the Luxembourg bulletin board - or if they are from the Rheinland in Germany (a likely place with the name THOME), you could try the German board. Another place to try would be the bulletin board for county that Woodstock is in!