| "descendant of Áilgheas"|
Hallessy, Hallisey, Hallisy, Hallissy, Hallisay, O Hallishy, O Hallyse
Hallissey is an English-language surname, derived from the Irish-language, and traditionally associated with the Irish counties of Cork and Kerry.
The name is derived from the Irish Ó hÁilgheasa, a patronym meaning "descendant of Áilgheas". The latter personal name is derived from the Irish áilgheas, meaning "eagerness". The modern Irish form of the name is Ó hÁileasa.
Other English-language surnames cognate to Hallissey include Hallessy, Hallisey, Hallisy, Hallissy, Hallisay, O Hallishy, and O Hallyse.
The surname Hallissey is traditionally found in County Cork and County Kerry, particularly in west Cork and south Kerry.Laura Hallisey, a United States Curling champion.
Claire Hallissey, a British Olympic marathon runner.
Eric Hallissey, an Irish-German writer of erotic fiction.
Brian Hallisay, an American actor.