[Obituary of Henry Petty-Fitzmaurice… (1863)
“ President of the Literary Fund Society and of the Statistical Society, and Vice-President of the Russell Institution, P.C., D.C.L. and F.R.S., was the second son, and the only son by his second marriage with Louise, second daughter of John, second Earl of Upper Ossory, of William, second Earl of Shelbourne, K.G., the distinguished statesman, and Prime Minister in the reign of George III, who was created Marquis of Lansdowne the 6th of December 1784. The son, the Marquis just deceased, known in his younger days as Lord Henry Petty, was born at Lansdowne House, London, July 2, 1780. ”
