[4] The present house was built a short distance away from the previous castle by Lord Greville and his wife Lady Rosa.
Following the death of George Nugent, 1st Marquess of Westmeath in 1871, Clonyn had passed to Lady Rosa, his only surviving child.
She had married Fulke Southwell Greville-Nugent, 1st Baron Greville, who in 1866 had assumed by Royal Licence the additional surname of Nugent.
[4] In the post-World War II period, at the instigation of Rabbi Solomon Schonfeld, the castle served briefly as a home for Jewish children, most of them orphans of the Holocaust.
Manchester businessman and philanthropist Yankel Levy was persuaded to buy the castle and associated land for £30,000 and some 100 children aged between 5 and 17 were temporarily housed before rejoining their families or starting new lives in England, America or Israel.