It is seems you can't have the Giebelhaus.org website without saying something about the history of the Giebelhaus family. As far as I can figure out, every Giebelhaus in North America is related to each other. Ruth Davison and the family in Canada have done a great deal of work on the Genealogy. Please see her web site, Decendants of Johannes Giebelhaus, for more information.
History of the Giebelhaus Surame
The Giebelhaus name goes back to a town called Gieboldehausen, which is just at the edge of the East Germany line. This name has always been there and sometimes was called Gebeldehausen or Geveldehausen (low German). A line of knights originated there and carried that name. We bear one of the oldest names in Germany which has been used even in the pre Christian era. Professor Förstemann (who did research in the history of German family names) has found that the name had originally nothing to do with a gable (giebel). Rather it was derived from a female name "Gib hilde husen" literally "offer Hilde a house". At another place, it is written Gebehildehausen. Family lore has it that the family seat was once nearly fully destroyed by fire. Only one stone gable remained standing in its middle. Surrounding villagers then joked "you should not be called Gibhildehausen but because of your gable, Giebeldehausen" which was later abbreviated to Giebelhausen. Records show that about 1350 or 1400 the family split into two branches, a Hartz Mountain and a Hessian line. One of the former had an estate in Welbsleben in 1480 which is still owned by a Giebelhausen family. The Hessian branch was much larger and apparently spread over numerous parts of Germany. This is listed in detail in a brochure "Hessische Familienkunde". A letter written to a Mrs. Haynes from a Heinz Giebelhausen of Fernruf states, "Your forefather, Conrad, who emigrated to America is most likely from the Hessian branch of the family."
Giebelhaus Family Chronicles 1994 (Parkview Studios Ltd., Spruce Grove, AB, Canada), p. 7. "Our Surname"