The McCormick link will take you to the main tree which contains over 1400 individuals along with some documentation.
The Hattrick Project is a work in progress and will hopefully show the Hattricks from their first appearance in Scotland to the present time. Currently John Hattrick (1799-1872) has no parental information or even a birth location. We are exploring the possibility he has born in Scotland and emigrated to Belfast.
The Discussion link will take you to the message board where you can ask questions or provide answers.