Thatirishwriter's list "Buachaillí" of 4 great name ideas: Niall - Sinatra!

Buachaillí

Niall is pronounced nye-al--something like Neil,  but this Irish spelling of the name makes it much more current and cool.
<br/><br/>This is an ancient name borne by several of the high kings of Tara, the most famous of whom was the powerful semi-mythological fifth century king known as Niall of the Nine Hostages, ancestor of all the O'Neills and MacNeills that followed.
<br/><br/>Niall Ferguson is a respected English historian, one of Time magazine's 100 Most Influential People in the World in 2004.

Niall

Pronounced like Owen, this was the name of several early Irish kings and saints, as well as a celebrated Ulster hero. Often spelled with two 'n's in Scotland, it has been Anglicized as Ewan, Ewen, Euan, Owen, Hugh, or Eugene.

Eoghan

Also Anglicized as Dara and also spelled Daire in its native form, Darragh has an undeniably rugged appeal. It's used for both girls and boys in Ireland, but it's very popular in particular for boys.