He was succeeded by his younger brother, the third Viscount, who married into the House of Stratford (from which all latter holders of the Powerscourt Viscountcy descend).
[citation needed] The latter's grandson, the fifth Viscount, sat in the House of Lords as an Irish representative peer from 1821 to 1823.
On his death the titles passed to his son, the seventh Viscount, who was an Irish Representative Peer from 1865 to 1885.
His son, the eighth Viscount, served as Lord Lieutenant of County Wicklow and was a member of the short-lived Senate of Southern Ireland.
The heir presumptive to the viscountcy is the current holder's fifth cousin once removed: Richard David Noel Wingfield (born 1966), a great-great-great-grandson of the Rev.