Last Names in Irish: A Comprehensive Guide

Discover the rich history and meaning behind Irish last names. This guide explores a diverse range of surnames, offering insights into their origins, cultural significance, and fascinating etymologies. From ancient Gaelic traditions to Norman influences, Irish last names reflect the vibrant tapestry of the Emerald Isle. Dive into the captivating world of Irish genealogy and uncover the stories hidden within these evocative surnames.
1. **Ó Briain:** Descendant of Brian, a common Irish personal name meaning "strong" or "noble."
2. **Ó Súilleabháin:** Descendant of Suileabháin, meaning "little-eyed" or "eagle-eyed."
3. **Ó Néill:** Descendant of Niall, meaning "champion" or "cloud" in Irish.
4. **Ó Conchúir:** Descendant of Conchúir, meaning "lover" or "desire."
5. **Ó Ceallaigh:** Descendant of Ceallach, meaning "bright" or "shining."
6. **Ó Raghallaigh:** Descendant of Raghallach, meaning "swift" or "fiery."
7. **Ó Dúill:** Descendant of Dúill, meaning "black" or "dark."
8. **Ó Maolchonaire:** Descendant of Maolchonaire, meaning "bald-headed" or "shaven."
9. **Ó Cearbhaill:** Descendant of Cearbhall, meaning "strength" or "brave."
10. **Ó Laoi:** Descendant of Laoi, meaning "lion" or "warrior."
11. **Ó Dónaill:** Descendant of Dónall, meaning "world-ruler."
12. **Ó Fearghaill:** Descendant of Fearghal, meaning "man" or "warrior."
13. **Ó Cadhlaigh:** Descendant of Cadhlach, meaning "fair" or "beautiful."
14. **Ó hAodha:** Descendant of Aodh, meaning "fire" or "passion."
15. **Ó Maoláin:** Descendant of Maolán, meaning "bald" or "shaven."
16. **Ó Muircheartaigh:** Descendant of Muircheartach, meaning "sea warrior."
17. **Ó Murchú:** Descendant of Murchú, meaning "sea-born" or "sea-faring."
18. **Ó Riada:** Descendant of Riada, meaning "king" or "ruler."
19. **Ó Tuathail:** Descendant of Tuathail, meaning "people" or "nation."
20. **Ó Mathghamhna:** Descendant of Mathghamhnan, meaning "gift" or "present."
21. **Ó hUiginn:** Descendant of Uiginn, meaning "descendant of the bard."
22. **Ó hAileasa:** Descendant of Aileas, meaning "noble" or "great."
23. **Ó Gallchóir:** Descendant of Gallchóir, meaning "stranger" or "foreigner."
24. **Ó Gormáin:** Descendant of Gormán, meaning "blue" or "dark-haired."
25. **Ó Flaithbheartaigh:** Descendant of Flaithbheartach, meaning "noble" or "powerful."
26. **Ó Nuallain:** Descendant of Nuallain, meaning "cloud" or "sky."
27. **Ó Coileáin:** Descendant of Coileán, meaning "puppy" or "young dog."
28. **Ó Longáin:** Descendant of Longán, meaning "ship" or "longship."
29. **Ó Dubhghaill:** Descendant of Dubhghaill, meaning "black foreigner."
30. **Ó Broin:** Descendant of Broin, meaning "sorrow" or "grief."
31. **Ó hEochaidh:** Descendant of Eochaidh, meaning "horse" or "warrior."
32. **Ó Cléirigh:** Descendant of Cléirigh, meaning "clerk" or "scholar."
33. **Ó Murchadha:** Descendant of Murchadh, meaning "sea warrior."
34. **Ó Maicín:** Descendant of Maicín, meaning "little son."
35. **Ó Cróinín:** Descendant of Cróinín, meaning "little crown."
36. **Ó Faoláin:** Descendant of Faolán, meaning "wolf."
37. **Ó Seachnasaigh:** Descendant of Seachnasach, meaning "descendant of Seachnas."
38. **Ó Cearnaigh:** Descendant of Cearnach, meaning "strong" or "brave."
39. **Ó hEadhra:** Descendant of Eadhra, meaning "noble" or "worthy."
40. **Ó Buachalla:** Descendant of Buachalla, meaning "herdsman" or "shepherd."