The Latter Day Saints have microfilms for these parish records. Films 1192562 and 1192563 for Safien; and 1192574 for Nufenen. They look like they go back to the early 1600s or so...You would...in a brief nutshell.. need to figure out what the closest LDS Family History Center is to you; go to the website at familysearch.org and register as a user; use their online catalog to order the films at a very reasonable price (basically free to see just paying for the shipping); and when they get to your local family history center go look at them. And try to do some research on reading Old German script because you are likely to find it challenging. If you do all that you are likely to be very rewarded. In the meantime I will look at those census records and see if I can glean anything for you. Good Luck!