During the Irish Rebellion of 1641 John, who adhered to Roman Catholicism, was accused of favouring the rebels, and it does not seem that either side of the conflict fully trusted him.
[2] Possibly for this reason his son Nicholas, the 3rd Viscount, had some difficulty after the Restoration of Charles II in recovering the family estates.
[3] Because of Nicholas's loyalty to James II the estates were again forfeited after the Glorious Revolution of 1688, but were later restored to his son John, the 4th Viscount.
[4] Nicholas, the 5th Viscount, who succeeded to the title in 1727, gained notoriety in 1743 when he was charged with the murder of his valet Michael Walsh: he was tried by his peers and acquitted.
Little is known of the details of the alleged murder, partly because both the Crown's key witnesses had died before the trial started.