This was great finding a Duey page, as my father's mother was a Duey from Ireland. I was Judy Duey, daughter of John and Helen Duey, My grandfather was Stephen Duey of Iowa. This is a great site. I visited a new city I would look in the phone book for a Duey and usually there were none. Two lived in Philadelphia and spelled their name Dewey and the other two spelled it Duey.
Nobody knows which was the original name.
I learned about the Duey site from my cousin Herb Duey who has been working on our family history. I admire the time and dedication required to assemble a family genealogy. Keep up the good work. It's incredible to have found a web site such as this. I know it's been difficult to stay in touch with my Duey family, however, this site has re-fostered that connection.