Dardistown Castle was built in 1465 by John Cornwalsh with a British Government grant of £10.
In the mid 1400.s the English were fully occupied in the Hundred Years War.To compensate for their military absence from Ireland a limited number of government grants of 10 pounds were made available to landowners in the Pale ,for the building of fortified houses.John Cornwalsh obtained a 10 pounds grant in 1465 for the building of Dardistown Castle.