Knockdrin is an area north of Mullingar, in County Westmeath, Ireland. It is the home of the Westmeath Hunt, and its most notable building is Knockdrin Castle. The R394, the main Mullingar to Castlepollard road, runs through the area.
Knockdrin Castle is, according to The Buildings of Ireland: North Leinster (published in London in 1993 and better known as the Pevsner Guide to North Leinster), mainly an early 19th-century neo-Gothic structure. The current castle was largely designed by Richard Morrison (later Sir Richard Morrison) and was built on the site of High Park, the original 18th-century mansion that formerly stood there. The castle was constructed for Sir Richard Levinge, 6th Bt. (1785-1848), probably in the 1810s. The castle is currently the home of the von Prondzynski family. The current owner, Prof. Ferdinand von Prondzynski, was President of Dublin City University from 2000 to 13 July 2010, and is now Principal and Vice-Chancellor of Robert Gordon University, Aberdeen, Scotland.
Until the early 18th century, the main residence on the estate was a small Norman castle (often known locally as 'King John's Castle') which was destroyed by fire. The main part of High Park, the previous mansion that stood on the site of the current Knockdrin Castle, may have been built in the early 18th century for Sir Richard Levinge, 1st Bt., M.P. (1656-1724), although there were probably further alterations and additions made to the house that were completed by the late 18th century. The Levinges came to Ireland with the Williamites, in the late 17th century. The first Sir Richard Levinge was Chief Justice of the Common Pleas and a member of the Lords Commissioners, who were appointed by the Crown to settle all the land questions which had arisen in Ireland after the Cromwellian conquest, the Restoration and the Williamite Wars. Sir Richard took advantage of his position to purchase the Knockdrin Estate from the Tuites, who were the Norman-Irish owners up to that time. At the time there were over 12,000 acres (49 km2).