Prior to this, Slane Castle had been in the possession of the Flemings, Anglo-Norman Catholics who had aligned themselves with the Jacobites in the War of the Grand Alliance, and thus after the Williamite victory, their property was eligible for confiscation. Christopher, 17th Baron Slane (1669 – 14 July 1726; created The 1st Viscount Longford by Queen Anne in 1713), was the last Fleming Lord of Slane. The present owner of the castle is Henry Conyngham, who styles himself as The 8th Marquess Conyngham. The eldest son of Lord Conyngham is Alex, Earl of Mount Charles.