Raghnall \r(a)-ghna-ll, ragh-nall\ as a boy's name is a variant of Reginald (Latin), and the meaning of Raghnall is "ruler's advisor".
The baby name Raghnall sounds like Reginalt, Regnault, Regnauld, Reginault, Reginauld and Reginaldo. Other similar baby names are Raphael, Raynell, Ranell and Raonull.