This is a linguistic database of Irish-language surnames. It currently comprises nearly 700 surname clusters. More information »

Sort mode (What is this?)

Filter results

31 results

Initial letter: O

Surname Cluster
Oirc Mac Oirc ga Orc
Oirc Mhic Oirc ga Orc
Oirc Nic Oirc ga Orc
Oireachtaigh Mac Oireachtaigh ga Oireachtach
Oireachtaigh Mhic Oireachtaigh ga Oireachtach
Oireachtaigh Nic Oireachtaigh ga Oireachtach
Oireachtaigh Ó hOireachtaigh ga Oireachtach
Oireachtaigh Uí Oireachtaigh ga Oireachtach
Oireachtaigh Ní Oireachtaigh ga Oireachtach
Oisdealbhaigh Mac Oisdealbhaigh ga Oisdealb
Oisdealbhaigh Mhic Oisdealbhaigh ga Oisdealb
Oisdealbhaigh Nic Oisdealbhaigh ga Oisdealb
Oisín Ó hOisín ga Oisín
Oisín Uí Oisín ga Oisín
Oisín Ní Oisín ga Oisín
Oisín Mac Oisín ga Oisín
Oisín Mhic Oisín ga Oisín
Oisín Nic Oisín ga Oisín
Oistigín Mac Oistigín ga Oistigín
Oistigín Mhic Oistigín ga Oistigín
Oistigín Nic Oistigín ga Oistigín
Oistín Ó hOistín ga Oistín
Oistín Uí Oistín ga Oistín
Oistín Ní Oistín ga Oistín
Oitir Mac Oitir ga Oitear
Oitir Mhic Oitir ga Oitear
Oitir Nic Oitir ga Oitear
Ormonde en Rua
Osáin Ó hOsáin ga Osán
Osáin Uí Osáin ga Osán
Osáin Ní Osáin ga Osán

Our apologies

This website is not compatible with the Microsoft Internet Explorer web browser. Please use Chrome, Edge, Firefox, Opera, or another modern browser to access the website content.

Contact us at if you have any questions.