Look up Healy in Wiktionary, the free dictionary.
The English-language surname Healy is in use by three separate ancestral lines of people from Ireland.
When Irish people began to anglicise their names, two separate clans adopted the English-language surname of "Healy". There was the Ó hÉilidhe clan from Connaught and the Ó hÉalaighthe clan from Munster.[citation needed]
Many different spellings of the surname exist including Haly, Haley, Haily, Healey, Hely, O'Healey and O'Haly.