He was the eldest son of John "Bumper Jack" McClintock, Member of Parliament for Enniskillen and Belturbet in the Irish House of Commons who commissioned the building of this mansion at Drumcar House near Drumcar, northeast of Dunleer in 1777. His mother was Patience, daughter of William Foster, esq.
Member of Parliament McClintock was present during the Kingsborough Trial. McClintock served the office of High Sheriff of Louth in 1798. He was present in the same year at the Battles of Arklow and Vinegar Hill.
At the general election in 1820, McClintock was returned to the Parliament for Athlone, but he resigned his seat in the same year.
In 1830, he took the place of John Leslie Foster, and he was elected after a poll.
7th United Kingdom Parliament. 9th United Kingdom Parliament.
