His son, the fourth Viscount, received a pardon for all treasons and rebellions from King Charles II and was restored to his estates.

He was succeeded by his son, the fifth Viscount who was a supporter of King James II and led the siege of Derry in 1688 to 1689.

Despite the official title version, members of the Butler family have been known to refer to themselves as the rightful heirs to both the earldom and dukedom of Kilkenny.

[5] In 1911 he was created Baron Mountgarret, of Nidd in the West Riding of the County of York, in the Peerage of the United Kingdom.

The ancestral family home was Nidd Hall, also near Harrogate, The heir apparent is the present holder's son, the Hon.