There is a site on the web devoted to finding out the history of your surname and what is the Irish Equivalent of you surname. It's a pretty spartan affair, but the website is very easy to use.

You can find it here: Sloinne 

Thanks to the Irish Central website for the tip

From the website:

Welcome

'Sloinne' is the Gaelic translation for 'Surname', the purpose of this website is to develop a comprehensive…