Baron de la Poer

Baron La Poer, de la Poer, or Le Pour, is a title in the Peerage of Ireland held by the Marquess of Waterford. Its creation is the sole instance in the law of the Kingdom of Ireland recognising a peerage by writ.

James Power, 3rd Earl of Tyrone, who was also the 8th Baron Power, held both his titles by letters patent (dated 1535 and 1637 respectively), which specified that the titles would be inherited by heirs male of the grantee. When he died in 1704 however, his only child was a daughter, Lady Catharine Power. The Earldom became extinct, and in an ordinary course of events, the Barony of Power would have been inherited by his distant cousin, Colonel John Power (or Poore) of the French Régiment de Dublin. The colonel was however a Jacobite and therefore outlawed and attainted in 1688. Although inheriting none of the titles, Lady Catharine therefore inherited the land.

Lady Catharine grew up and married in 1717 an Irish freemason and politician, Sir Marcus Beresford, 4th Baronet. After a lawsuit with John Power, Sir Marcus and Lady Catharine retained the Power property, and Sir Marcus was raised into the Peerage of Ireland by creating him Viscount Tyrone in 1720. After the Jacobite rebellion of 1745, he was further elevated in 1746 as Earl of Tyrone (the same name of title as that of his father-in-law, but a new creation). After he died in 1763, Lady Catharine, now the Dowager Countess of Tyrone, had petitioned the Irish House of Lords to restore to her the "Barony de la Poer", which she asserted was created by writ for her grandfather Richard Power. He was summoned to the Parliament of Ireland somewhere in the 1650s, but was not yet a peer. He became the 6th Baron Power in 1661, and was created the 1st Earl of Tyrone and 1st Viscount Decies in 1673.

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