David Barry, 1st Earl of Barrymore

David Barry, 1st Earl of Barrymore, 19th Baron Barry, 6th Viscount Buttevant (10 December 1604 – 29 September 1642) was the posthumous child of David Barry, the son of David de Barry, 5th Viscount Buttevant, and Elizabeth Power, daughter of Richard Power, 4th Baron le Power and Curraghmore.

He was born 10 March 1604 and succeeded to the Barrymore estates on 10 April 1617 on the death of his grandfather.

In 1631 he married the Lady Alice Boyle, daughter of Richard Boyle, 1st Earl of Cork, by his second wife, Catherine Fenton. Through Cork's influence he was created Earl of Barrymore on 28 February 1628. During the 1641 rebellion, he sided with the Crown upon whom his title and lands depended. On 10 May 1642 he stormed the Castle of Ballymacpatrick (now Careysville), near Fermoy, which was held by his grand-aunt, and hanged forty of the rebel leaders before breakfast. He led a regiment at the Battle of Liscarroll in September 1642. He died two weeks later of a fever on the 29 September 1642 at his house in Castle Lyons, and was buried in the Boyle Vault by his grieving father-in-law, Richard Boyle. Youghal, County Cork, Ireland.