I am looking for information about my grandfather whose biological parent's last name is Dunn (or Dunne). My grandfather was born about november 1897; the story is that he was given to an orphanage due to the mother having a terminal illness. He was adopted by the McCarty family in St. Paul, MN, and given the name James Ferdinand McCarty. His biological parents may be related to the artist and illustrator, Harvey Dunn. Any clues or info would be appreciated.