Hi Suzy, I cannot help you with Arnold Dunbar, but my dunbar's came from Scotland durning the Civil War. They settled in Bedford, Ohio. My g,g,grandfather was Alexander A. Dunbar (b.April 10, 1815 in Scotland; d.May 10, 1881 in Bedford). He had two or three sons. Most of the decendents are known as far as two of the sons. The third died at a young age. Alexander's father was James Dunbar who m. Ann Brebner. They lived and died in Scotland. Alexander had 4 male siblings: James, George, David, and John. I know nothing of what happened to those 4 siblings. If one sibling comes to the "colonies", it was not unusual for 1 or 2 others to come also. There is another Dunbar buried in the "family plot" in Bedford. I know we have family in Michigan and Canada. Wisconsin would not be too far from either should a decendent somewhere decide to move west or go south.