In Irish it's "Breatnach"
Robert Walsh - Irish writer - died in 1852.
Robert Walsh - Irish writer - was born in 1772.
James Walsh - Irish politician - died in 1948.
James Walsh - Irish politician - was born in 1880.
Louie Walsh is infact Irish, But is currently working in an English Society.
Billy Walsh - Irish footballer - was born on 1921-05-31.
Billy Walsh - Irish footballer - died on 2006-07-28.
Mag Shamhráin is the Irish spelling.
The Irish spelling of 'Sheila' is Síle. It is originally derived from Cecilia.
Louis Walsh
It's probably Irish. It looks like an anglicized spelling of Pádraig. But most Irish Patricks have adopted the English spelling.
As its not an Irish name there would be no Irish spelling for it