Cognomen Hierlihy (Hierlihy 
) , in the world, is a rare surname. The cognomen Hierlihy is habitual in Canada, where it is a rare surname, New Zealand, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Hierlihy | New Zealand, Canada, United States |
| timothy hierlihy (b. 1734) |
|
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| catherine hierlihy researcher (ORCID 0000-0002-6232-2502) |
|