There's a fantastic new resource availabe on cd-rom called Hungarian Village Finder, Atlas, and Gazetteer for the Kingdom of Hungary (HVF).You can find out all about it at: http://hungarianvillagefinder.com/cdrom/CD.htmlhttp://hungarianvillagefinder.com/cdrom/CD.html
Using it you would find that your F. Boldad was actually Felsõboldád.Felsõboldád was in the old Erdõd Járás, Szatmár Megye.You can link to this map from Eötvös University, Department of Cartography directly from the HVF program or from here: http://lazarus.elte.hu/hun/maps/1910/szatmar.jpghttp://lazarus.elte.hu/hun/maps/1910/szatmar.jpg
HVF shows there was a Greek Catholic church in the village. Once again you can link to the LDS Family History Catalog from the program or from the following link, but sad to say, the Mormons have not filmed the records from there.Most likely that's because Felsõboldád is now in Romania.Today it is called Bolda.
If your ancestors were not Greek Catholic the HVF also shows the names of the other willages where other religious denominations went for services.
Now for Sarafalva.HVF shows that Sárafalva was also called Szaravolla and was in the old Perjámos Járás, Torontál Megye.Find it on this map: http://lazarus.elte.hu/hun/maps/1910/torontal.jpghttp://lazarus.elte.hu/hun/maps/1910/torontal.jpg Today it is also in Romania and called Saravale.