CAIN
Cain is the anglicized form of Gaelic Mac Iain, patronymic from Iain, one of the Gaelic forms of John. This name is found in many other spellings, including McCain, Kean, and McKean. In some cases it may also be a variant of Coyne. The English spelling of Cane is of Norman origin. It is an habitational name from Caen in Calvados, France, named with the Gaulish elements catu ‘battle’ + magos ‘field’, ‘plain’.