Gaelic nobility of Ireland
The Gaelic nobility of Ireland is one of three groups of Irish nobility, along with those nobles descended from the Hiberno-Normans and those granted titles of nobility in the Peerage of Ireland. == Legal status == By the time of the Treaty of Limerick (1691), almost all Gaelic nobles had lost any semblance of real power in their (former) domains.
Source: Wikipedia — Gaelic nobility of Ireland (CC BY-SA 4.0)