Ponsonby, G. C. (1915). Bishopscourt and its owners. With a pedigree of the Ponsonby family and portraits of Brabazon Ponsonby, 1st Earl of Bessborough and Rt. Hon. John Ponsonby, Speaker of the Irish House of Commons. Note by Dermot Robert Wyndham Burke, 7th Earl of Mayo.
Lua i Stíl Chicago (17ú heag.)Ponsonby, Gerald Capt. Bishopscourt and Its Owners. With a Pedigree of the Ponsonby Family and Portraits of Brabazon Ponsonby, 1st Earl of Bessborough and Rt. Hon. John Ponsonby, Speaker of the Irish House of Commons. Note by Dermot Robert Wyndham Burke, 7th Earl of Mayo. 1915.
Lua MLA (9ú heag.)Ponsonby, Gerald Capt. Bishopscourt and Its Owners. With a Pedigree of the Ponsonby Family and Portraits of Brabazon Ponsonby, 1st Earl of Bessborough and Rt. Hon. John Ponsonby, Speaker of the Irish House of Commons. Note by Dermot Robert Wyndham Burke, 7th Earl of Mayo. 1915.
