The Templeton and Upton family mausoleum is in the care of the National Trust and is open to visitors. Many Templetown viscounts and barons are buried there. The mausoleum was built in the form of a triumphal arch by Robert Adam, who also extended the house in 1783. The house is currently inhabited by the Kinahan family, being purchased by Sir Robin Kinahan in the 1960s, and extensively restored by Lady Coralie Kinahan. The surrounding graveyard contains the graves of such notables as William Orr (United Irishmens' Rebellion), and Josias Walsh, grandson of John Knox, the Scottish Reformer.