Type Surname (from nickname)
Usage Ancient Irish
Other Forms FormsHeanaghan, Henehan, Henihan, Hennigan, Henaghan, Henaughan, Henekan, Heanan
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Contributor Contrib.amanh on 3/5/2017
Thought to be a nickname or metonymic, and to owe its derivation from the early Gaelic word ean meaning a "bird". The derivation is from the ancient name O'hEeanchain, which loosely translates as The descendant of the son of the Bird.