First name content excerpted from The Complete Idiot's Guide to 30,000 Baby Names © 2005 by Marcia Layton Turner. Buy this book online or call 1-800-253-6476.
Last name content copyright © 2006 Patrick Hanks.
Last name origin & meaning:
Irish and Scottish: Anglicized form of Gaelic Mac Cadáin ‘son of Cadán’, a rare surname from County Armagh; or of Mac Adáin or Mac Aidín, both based on a diminutive of the personal name Adam.