The four members of U2 are among the world's most famous Irishmen, but until this week only three of them were legally Irish.
Guitarist David Howell Evans, known as The Edge, was born in Essex in England to Welsh parents and as a result never held Irish citizenship even though he has lived in Ireland since he was one.
On Monday the 63-year-old had Irish citizenship conferred on him during a ceremony in Killarney in County Kerry.
Sporting an Irish tricolour flag clip on his lapel, the musician said it was a "a monumental day" for all involved.

