Harrington in Ireland

From O'Hingerdell to Harrington- Why Harrington? My Theory.......

  Usually we find the surnames Hingerty and Harrington in southern Cork and northern Tipperary. However, there are references to both Hingerty and Harrington families in Kilkenny,Waterford and in tipperary close to the county border. Are these families related to each other? How do they fit into the bigger Hingerty/Harrington picture? The first reference to either surname in Waterford is a very early one.  In 1568 Dermot Hyngerty, a merchant of Waterford was granted English Liberty by Elizabeth I of England. This was documented in Fiant 1224 of 23 October 1568. By being granted English Liberty, Dermot was renouncing his Irish rights and agreed to enjoy all the rights, privileges and responsibilities of being a loyal subject of the English Crown. He, and his children (issue) would not be held back by the laws that restricted Irish access to employment, land etc. We know nothing more about Dermot or his family.  Note that in this period of Irish history, the only reference...