The Irish nobility could be described as including persons who do, or historically did, fall into one or more of the following categories of nobility:Gaelic nobility of Ireland: descendants in the male line of at least one historical grade of king (Rí). Hiberno-Norman or Old English (Ireland) nobility: descendants of the colonisers who came to Ireland from Wales, Normandy and England after the Norman invasions of England and Ireland in 1066 and 1169–71, respectively. Peerage of Ireland, whose titles were created by the English and later British monarchs of Ireland in their capacity as Lord or King of Ireland.