BIRTH OF THE HEIR TO THE IMPERIAL THRONE [ROME (King of)]. - Clarke (Henry). Signed "duc de Feltre" (1/2 p. in-folio), with apostille signed by Hugues-Bernard Maret (1/2 p. in-folio), addressed to General Jean-Baptiste Olivier, commander of the 16th military division in Lille. Paris, 20th March 1811. Telegraphic dispatch: "General, have one hundred and one cannon shots fired in all the places of war in your division, to announce the birth of an imperial prince, king of Rome...".