According to Francis Grose's Antiquities of Ireland, "to curb their outrages, Thomas Crawley, Archbishop of Dublin and Lord Justice, set out from Dublin, but proceeded no farther than Castledermot; the troops went forward under military leaders, he remaining engaged in processions and prayers for their success".
[3] In 1634 the castle was leased to the Jesuit Order by Countess Elizabeth, the widow of Gerald FitzGerald, 14th Earl of Kildare and they remained there until 1646.
[citation needed] In the early 18th century, the 19th Earl of Kildare decided to make Carton House the family seat and Kilkea Castle was leased to a succession of tenants.
[5] Kilkea Castle was then run as a hotel for decades, but entered Examinership in 2009, as a result of the Irish financial crisis.
[7] The polar explorer Sir Ernest Shackleton (1874-1922) was born at Kilkea House, near the castle, to a Quaker family.