The Monaghan-Monahan Surname DNA Project is part of the Monaghan one-name study. This DNA project is open to all who are interested in advancing this research through DNA testing. If your Surname is missing and you feel it should be included, please send us an email and we'll be glad to add it. You can learn more about this significant research, and the associated family trees, by visiting the one-name study web site, or contacting the Group Administrator. http://www.one-name.org/profiles/monaghan.html monaghan@one-name.org