50+ Notable Irish Surnames to Discover Your Inner Paddy

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Are you on the lookout for inspiration for baby names? You’re in for a treat.

Last names carry a rich history, linking us to our ancestors and the families that came before us. Many of us might have roots that extend beyond our current location, and surnames serve as a fascinating means to explore our heritage. Due to significant emigration patterns, Irish surnames have found their way across the globe. You may recognize some well-known examples, like Conan O’Brien or the Kennedys. However, numerous others are deeply embedded in Ireland’s clan traditions, highlighting the familial connections inherent in each surname.

Take a look at our compilation of popular Irish surnames, along with their Irish spellings and meanings. If you spot your family name here, it’s the perfect opportunity to reconnect with your heritage!

Common Irish Surnames

1. Murphy
   Irish Spelling: Ó Murchadha
   Meaning: Descendant of Murchadh, a maritime warrior.
2. O’Brien
   Irish Spelling: Ó Briain
   Meaning: Descendant of Brian Boru, the High King of Ireland.
3. Kennedy
   Irish Spelling: Ó Cinnéide
   Meaning: Descendant of Cennétig Mac Lorcáin, father of Brian Boru.
4. O’Reilly
   Irish Spelling: Ó Raghallaigh
   Meaning: Descendant of Raghallach, King of Connacht (Ireland’s western province).
5. O’Neill
   Irish Spelling: Ó Néill
   Meaning: Descendant of Niall Noigiallach, a prominent Irish king.
6. Smith/McGowan
   Irish Spelling: Mac Gabhann
   Meaning: Son of the blacksmith.
7. O’Rourke
   Irish Spelling: Ó Ruairc
   Meaning: Descendant of Ruarc, King of Bréifne (an area encompassing counties Leitrim and Connacht).
8. Walsh
   Irish Spelling: Breathnach
   Meaning: Welshman.
9. Murray
   Irish Spelling: Ó Muireadhaigh
   Meaning: Descendant of Muireadhaigh, a mariner.
10. Collins
    Irish Spelling: Ó Coileáin
    Meaning: Descendant of the young warrior/hound.
11. Sheeran
    Irish Spelling: Ó Síorán
    Meaning: Descendant of Sírín.
12. O’Sullivan
    Irish Spelling: Ó Súilleabháin
    Meaning: Descendant of the dark-eyed one.
13. McCarthy
    Irish Spelling: Mac Carthaigh
    Meaning: Son of Cárthach, King of Munster (Ireland’s southern province).
14. Lynch
    Irish Spelling: Ó Loinsigh
    Meaning: Descendant of Loingseach, a seafarer.
15. Fitzpatrick
    Irish Spelling: Mac Giolla Phádraig
    Meaning: Follower of Saint Patrick.
16. Sweeney
    Irish Spelling: Mac Suibhne
    Meaning: Son of Suibhne, a Scottish lord whose grandson came to Ireland and brought the name.
17. Regan
    Irish Spelling: Ó Riagáin
    Meaning: Descendant of Riagáin. Two Ó Riagáin clans exist in Ireland—one linked to Brian Boru and another that ruled in Meath.
18. O’Leary
    Irish Spelling: Ó Laoghaire
    Meaning: Descendant of Laoghaire, a keeper of calves.
19. Mullan/Mullen/Mullins
    Irish Spelling: Ó Maoláin
    Meaning: Descendant of Maelan, King of Maigh Seóla (in Galway).
20. Mulligan
    Irish Spelling: Ó Maolagain
    Meaning: Descendant of the bald man.

As you explore these names, you may be reminded of the profound connections we share with our ancestry. If you’re interested in learning more about family names and their significance, check out this insightful post.

Additionally, resources like Make a Mom and WebMD offer valuable information on family planning and pregnancy.

Summary

This collection of over 50 common Irish surnames illustrates the rich heritage they convey, linking modern individuals to their historical roots. Each name carries a unique meaning, reflecting the lineage and stories of those who came before. Embrace your ancestry, and consider how these names might inspire future generations.