McGaffin explained

MacGaffin, McGaffin
Meaning:	Son of Eachán
Region:	Northern Ireland
Language:	Irish
Variant:	Eachán; Mac Eacháin;

MacGaffin and McGaffin are Northern Irish surnames. They are Anglicisations of the Irish language Mac Eacháin, meaning "son of Eachán".^[1] The personal name Eachán is a diminutive of the personal name Eachaidh, which is based upon the Gaelic each, meaning "horse".^[2]

Notes and References

1. Web site: Learn about the family history of your surname . . 21 February 2010. which cited Book: Dictionary of American Family Names . . 0-19-508137-4 . for the surname "McGaffin".
2. Web site: Learn about the family history of your surname . Ancestry.com . 21 February 2010. which cited Book: Dictionary of American Family Names . Oxford University Press . 0-19-508137-4 . for the surname "McGahan".