Family History and Genealogy Resources by Surname
Reilly Surname Origin
(Origin Irish) shortened form of O’Reilly, an Anglicized form of Gaelic Ó Raghailligh ‘descendant of Raghailleach’
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.
Reilly Surname Meaning and Family Facts
Reilly Last Name Meaning
Search the FREE Ancestry.com Name Dictionary.
There is more to Reilly family history than the origin of your surname:
Start your Genealogy to find your personal Reilly family ancestry. It's easy to get started. Just begin your family tree with what you already know. Learn More.
A Reilly Family History Thought:
'Study the past if you would divine the future.' --Confucius