[2] One of its best known owners was John McClintock (1770–1855), a magistrate for County Louth, and formerly Serjeant at Arms in the Irish House of Commons, who was known to be occupying the estate in 1805 and until his death.

[3] The house was sold in about 1903 by The 2nd Baron Rathdonnell to his cousin, Frank McClintock (1853–1924), Rector of Drumcar and Dean of Armagh.

The original building had a simple tripartite doorcase that was set in a shallow relieving arch, as well as single-storey walls with built-in niches and sunken panels.

[1] The 1837 Topographical Dictionary of Ireland described it as "the seat of J. McClintock, Esq., an elegant mansion, beautifully situated in an extensive and richly wooded demesne, commanding a fine view of the Carlingford and Mourne mountains and the sea.

[1] The interior was entirely remodelled by Kelly & Jones when Drumcar House became St. Mary's Hospital, a colony for the mentally ill, in 1948.