Family History and Genealogy Resources by Surname
McCallen Surname Origin
The son or descendants of Callen or Colin. This name was given to the descendants of Sir Colin Campbell, or Colin the Great, who flourished toward the end of the thirteenth century, at Lochore, Scotland.
Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import; Arthur, William, M.A.; New York, NY: Sheldon, Blake, Bleeker & CO., 1857.
McCallen Surname Meaning and Family Facts
There is more to McCallen family history than the origin of your surname:
A McCallen Family History Thought:
'Those who forget their past are destined to repeat it.' --Robert A. Heinlein