His great-granddaughter, Geraldine Sarah Ponsonby (d. 29 November 1944), married Dermot Bourke, 7th Earl of Mayo.
County Mayo | Mayo Clinic | James Earl Jones | Prince Edward, Earl of Wessex | Louis Mountbatten, 1st Earl Mountbatten of Burma | 7th United States Congress | Herbert Kitchener, 1st Earl Kitchener | Earl | Frederick Roberts, 1st Earl Roberts | Earl of Derby | Earl Warren | Earl of Pembroke | Robert Harley, 1st Earl of Oxford and Earl Mortimer | Mayo | Earl of Warwick | Thomas Wentworth, 1st Earl of Strafford | Edward Smith-Stanley, 14th Earl of Derby | Earl of Shrewsbury | William Pitt, 1st Earl of Chatham | Simon de Montfort, 6th Earl of Leicester | Richard Neville, 16th Earl of Warwick | Earl of Leicester | John Scott, 1st Earl of Eldon | Robert Devereux, 2nd Earl of Essex | Robert, 1st Earl of Gloucester | Edward Harley, 2nd Earl of Oxford and Earl Mortimer | Earl of Devon | Douglas Haig, 1st Earl Haig | My Name Is Earl | Edward Hyde, 1st Earl of Clarendon |
His wife, Geraldine Sarah Ponsonby (d. November 29, 1944), was the granddaughter of John Ponsonby, 4th Earl of Bessborough, and the great-granddaughter of George Coventry, 8th Earl of Coventry.
These were the Earl of Dunraven, the Earl of Mayo, Col. William Hutcheson Poë and Col. Nugent Everard.