MacCostello of Galway MacGoisdelbh Gaillimh
Contact: Mr Sean Kennedy Costello,
Address: 201 Wellesworth Drive, Toronto, Ontario, Canada.
E-mail: cosclan@rogers.com
Contact us: Clans of Ireland, Sentinel Vaults, Waterloo Exchange, Waterloo Road, Ballsbridge, Dublin 4, D04 E5W7, Ireland.
Email: info@clansofireland.ie
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Clans of Ireland is an independent authority recognised by the United Nations and incorporated with charitable status in Ireland.
Patron Michael D. Higgins President of Ireland.