Saw your post here. I also have roots in Garrelsweer, but I don't think we are related. My ancestor was Jan Jacobs van Garrelsweer, b.1749 in Garrelsweer. He adopted the surname of Nienhuis in 1810, as a result of an edict of Napoleon that all Dutch citizens must adopt a surname if they were not already using one.
I write now to let you know that Garrelsweer will celebrate the 950th anniversary of its founding in 2007. I had the idea that all of us who have roots there might have a grand get-together in conjunction with that event.
I have not yet suggested this to anyone officially, but would like to know if there is any interest in this idea. I have no financial interest in such an event.