Career
John obtained title to Clontarf Castle near Dublin in 1649 through a financial arrangement with John Blackwall who had been granted the estate by Oliver Cromwell. Thereafter the Vernon"s occupied the castle for approximately 300 years.
John obtained title to Clontarf Castle near Dublin in 1649 through a financial arrangement with John Blackwall who had been granted the estate by Oliver Cromwell. Thereafter the Vernon"s occupied the castle for approximately 300 years.
