The American-Irish author of Lion of Ireland was born in 1966 before the writer of the wheel of time fantasy series. In the series, One Power is a supernatural force which some characters can harness to perform feats of (magic).
Morgan Llywelyn (born December 3, 1937) is an American-Irish historical fantasy, historical fiction, and historical non-fiction writer. 
James Oliver Rigney Jr. (October 17, 1948  September 16, 2007), better known by his pen name Robert Jordan, was an American author of epic fantasy. 
Lion of Ireland, by the American-Irish author Morgan Llywelyn, is a novel about the life of the Irish hero and High King Brian Boru. 
In The Wheel of Time fantasy series by Robert Jordan, the One Power is a supernatural force which some characters can harness to perform feats of (magic). 
