Peerage of Ireland has part(s) of the class baron
The Peerage of Ireland consists of those titles of nobility created by the English monarchs in their capacity as Lord or King of Ireland, or later by monarchs of the United Kingdom of Great Britain and Ireland. It is one of the five divisions of Peerages in the United Kingdom. The creation of such titles came to an end in the 19th century. The ranks of the Irish peerage are duke, marquess, earl, viscount and baron. As of 2016, there were 135 titles in the Peerage of Ireland extant: two dukedoms, ten marquessates, 43 earldoms, 28 viscountcies, and 52 baronies. The Crown of the United Kingdom of Great Britain and Northern Ireland continues to exercise jurisdiction over the Peerage of Ireland, including those peers whose titles derive from places located in what is now the Republic of Ireland. Article 40.2 of the Constitution of Ireland forbids the state conferring titles of nobility and an Irish citizen may not accept titles of nobility or honour except with the prior approval of the Irish government. This issue has not arisen in respect of the Peerage of Ireland because no creation of titles in it has been made since the constitution came into force.
In the following table, each peer is listed only by his highest Irish title, showing higher or equal titles in the other peerages. Those peers who are known by a higher title in one of the other peerages are listed in italics.