It is an open project. All are welcome. They encourage people with any variation of the McFadden surname to participate. These include: Fadden, Fadian, Mac Pháidín, MacFadden, MacFaden, MacFadyen, MacFadzen, MacFayden, MacPadden, MacPhaden, McFaddan, McFaddin, McFaden, McFadden, McFadgen, McFadyen, McFadzean, McFadzen, McFayden, McPadden, McPaden, McPhaden, McPhadon, McSpadden, Padden, Paden, Paterson, Paton, Patterson, Patton, Peden, and many others.
Any questions or comments can be directed to site creator Rob McFadden at firstname.lastname@example.org.