The Barony of Dunboyne was created by patent in the Peerage of Ireland in 1541. The barons are alternately numbered from the early 14th century by numbers ten greater than the number dating to the patent (e.g. the 28th/18th Baron Dunboyne died May 19, 2004). The first baron of this sequence in turn married the heiress to an earlier line of Barons Dunboyne.

Barons Dunboyne (1541)

• Edmond Butler, 1st Baron Dunboyne (d. 1566)
• James Butler, 2nd Baron Dunboyne (d. 1624)
• Edmond Butler, 3rd Baron Dunboyne (d. 1640)
• James Butler, 4th Baron Dunboyne (d. 1662)
• Pierce Butler, 5th Baron Dunboyne (d. 1690)
• James Butler, 6th Baron Dunboyne (d. 1701)
• Pierce Butler, 7th Baron Dunboyne (d. 1718)
• Edmond Butler, 8th Baron Dunboyne (d. 1732)
• James Butler, 9th Baron Dunboyne (d. 1768)
• Pierce Butler, 10th Baron Dunboyne (d. 1773)
• Pierce Edmond Creagh Butler, 11th Baron Dunboyne (d. 1785)
• John Butler, 12th Baron Dunboyne (1720-1800)
• James Butler, 13th Baron Dunboyne (1780-1850)
• Theobald Fitzwalter Butler, 14th Baron Dunboyne (1806-1881), elected a Representative Peer in 1868
• James Fitzwalter Clifford-Butler, 15th Baron Dunboyne (1839-1899)
• Robert St John Fitzwalter Butler, 16th Baron Dunboyne (1844-1913), elected a Representative Peer in 1901
• Fitzwalter George Probyn Butler, 17th Baron Dunboyne (1874-1945)
• Patrick Theobald Tower Butler, 18th Baron Dunboyne (1917-2004)
• John Fitzwalter Butler, 19th Baron Dunboyne (b. 1951)