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Last name Galligan (Galligan
) , worldwide, is quite a common surname. The cognomen Galligan is habitual in Ireland, where it is quite a common surname, Malta, where it is quite a rare surname, and Australia. Measured by absolute frequency, this name is the most popular in the United States, Ireland, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Galligan | Canada, Australia, United States, United Kingdom, Ireland |