I just saw your GenForum message of more than a year ago in response to a query on the Alleman history.I hope that you are still at this e-mail address.
You mentioned Robert Alleman, son of Vinol Alleman as being your relatives and that the "oldest ancestor" married a Norwegian so that the name Alleman may be Norwegian.I can assure you that it is not Norwegian, it is Swiss.The ancestor to which you must be referring was David Alleman.He married Inger Urdahl who was, most assuredly, Norwegian.One of David and Inger's sons, the eldest, was Vinol Alleman.He, too, married a Norwegian, Luella Erickson.One of their sons was Robert Alleman, who married a non-Swiss, Carol Wilson.The older son, Richard, married Verda Mae Floden, a Norwegian.So, the children of Richard and Robert don't carry much Swiss blood any more.They carry more Norwegian than Swiss blood.
David Alleman was the son of John L. Alleman (Johannes Lucius Allemann in the Swiss spelling) who married Marie Ringgenberg, a Swiss.John L. Alleman was, in turn a son of Peter Alleman whose wife was Marie Allemann and they, Peter and Marie, were born, raised, and married in Switzerland, in Untervaz in the Canton Graubuenden, not far from Chur in eastern Switzerland.Peter and his wife and either four or five children (I haven't gotten that straightened out yet) emigrated from Switzerland to Wisconsin in 1846.About 20 years later they migrated further into northern Polk County, Iowa, about 20 miles north of Des Moines, where there is now a town named Alleman.
How do I know all of this?I lived and was raised just a mile and a half from Vinol and Luella, about a mile from Robert and Carol, and a mile and three quarters from David and Inger in northern Polk County, Iowa.In addition, my grandmother was an Allemann from Untervaz and her father was a younger half brother of Peter.I am also interested in genealogy and have followed the Iowa Allemans quite a ways down several lines of descent.That descent has left quite a few descendents!
The Swiss gemein that includes the town of Untervaz is chuck full of people named Allemann (note the double "n").Peter was the son of Samuel Allemann and wife Marie Allemann.Then Samuel's son Peter married a local girl named Marie Allemann.What the relations between husbands and wives were I don't know.
As to the Norwegians: there was a Norwegian settlement of immigrants who first settled into Story County, Iowa just north of Polk County in 1855 and just north of the Swiss settlement that came into the northern Polk County area starting in about 1859.Swiss boys found the Norwegian girls to be interesting and proceeded to marry some of them.David Alleman was one of the Switzers that did just that.