I am Rudy Gieschen in Wilmington,NC and there were a lot of Germans who came here. In fact, my county, New Hanover,was named for Hannover Germany. I am looking for Gieschens from Ganrrenburg. If run across any of them, have them c0ontact me at this e-mail address.
Anyhow, I don't know the Fick side of the family very well. I know my grandmother was Henrietta Fick and one of 8 brothers and sisters. Other family names in the German community were Garms,Glaymeyer,Vollers, Ahern Rehder, and I can't think of the others right now. See if St Pauls Lutheran Church here in Wilmington has some information. I know a friend of mine was trying to do the geneology of the church.
So keep an eye out for any Gieschens from Gnarrenburg and have them get intouch with me!