Before 1500
| Title | Date of Creation | Surname | Current Status | Notes |
|---|---|---|---|---|
| Baron Athenry | circa 1280 | Bermingham | dormant 1799 | also Earl of Louth from 1759 to 1799, when this title became extinct |
| Baron Kingsale | 1340? | de Courcy | extant | |
| Baron Kerry | 1223 | Fitzmaurice | extant | also Earl of Kerry from 1723 and Marquess of Lansdowne in Great Britain from 1818 |
| Baron Barry | 1261 | Barry | extinct 1823 | also Viscount Buttevant from 1461 and Earl of Barrymore from 1628 |
| Baron Dunboyne | 1324 | Butler, Clifford-Butler | extant | confirmed by letters patent in 1541 |
| Baron Gormanston | c. 1370 | Preston | extant | also Viscount Gormanston from 1478 and Baron Gormanston in the United Kingdom from 1868 |
| Baron Slane | c. 1370 | Fleming | forfeit 1691 | |
| Baron Howth | 1430 | St Lawrence | extinct 1909 | also Viscount St Lawrence and Earl of Howth from 1767, also Baron Howth in the United Kingdom from 1881 |
| Baron Dunsany | 1439? | Plunkett | extant | |
| Baron Killeen | 1449 | Plunkett | extinct 1984 | also Earl of Fingall from 1628, also Baron Fingall in the United Kingdom from 1831 |
| Baron Portlester | 1462 | Fitzeustace | extinct 1496 | |
| Baron Trimlestown | 1462 | Barnewall | extant | |
| Baron Loundres | 1478 | Preston | extant | subsidiary title of the Viscount Gormanston, also Baron Gormanston in the United Kingdom from 1868 |
| Baron Delvin | 1486 | Nugent | extant | also Earl of Westmeath from 1621 and Marquess of Westmeath in the United Kingdom from 1822 to 1871 |
Read more about this topic: List Of Baronies In The Peerage Of Ireland