As Scrumhalf has mentioned there were so many Irish that settled in Cardiff- I researched Driscoll/O'Driscoll and Clifford families from County Cork that both went to Cardiff. Still haven't an exact place in Cork for either family but went the Driscolls went to U.S. the children born in Wales were listed in U.S. census as born in 'Cardiff, Ireland' which shows they that although they were born in Cardiff they still considered themselves Irish.