Anyway, a couple of weeks ago I sent off for a marriage certificate for my husband's gg grandparents. They were Reinhold Witthaus and Bertha Schanbacher, married 17 May 1896 in New York City. Both of them were born in Germany. This marriage certificate held more information than I ever could have imagined. A genealogy gold mine! The certificate listed their ages, parents names (with mother's maiden name!!), names of witnesses, place of birth, name and address of the Pastor who performed the marriage, and their residence at the time of marriage (they lived in the same building).
I searched around on Ancestry.com, but didn't come across anything that seemed very solid. So I switched my search over to FamilySearch.org. I plugged in Christain Schanbacher (Bertha's father) and came up with an excellent possibility of a marriage record for him in Germany. This particular record stated that Immanuel Christian Schanbacher married Wilhelmine Barbara Hauser (the names are a good match) on 1 May 1873 in Stetten Im Remstal, Germany (place matches and the date works, Bertha was born in 1878). It also gave the birth dates/place for the bride and groom, along with parents' names for each (again mother's maiden names!). I'll have to gather some more evidence to make a solid conclusion, but so far it is looking good.
Amazing how one piece of paper can provide you with so many clues and avenues to research.