John Ruxton
John William Ruxton was an Irish landowner and Member of Parliament.
The son of William Ruxton of Ardee in County Louth, John married Laetitia Fitzherbert, eventual heiress of Shercock in County Cavan and Blackcastle in County Meath. He was elected to succeed his father as MP for Ardee in 1751, and sat until 1776. He was then re-elected in October 1783 and sat until his death.
He built Ardee House in 1780. Ardee and Shercock were inherited by the eldest son, William, while Blackcastle was divided between the younger sons John, and Samuel. the two parts were later reunited.