indicate the level to which a name has been verified.
Type Surname
Usage Irish
Meaning & History
Dillon is a surname of Irish origin but with Breton-Norman roots. It is first recorded in Ireland with the arrival of Sir Henry de Leon (c.1176 – 1244), of a cadet branch of Viscounty of Léon, Brittany. He arrived in Ireland accompanying Prince John (later King John) of England.