Ferdinand I was married to Princess Mary Caroline of Austria (1752-1814)
Bibliogr.: Francisco Simas Alves de Azevedo, «Belos e interessantes ex-libis régios e principescos», in Boletim da Academia Portuguesa de Ex-Libris, # 19, Lisboa, 1962, p. 4
H.M. Francesco I, King of the Two Sicilies (1777 - 1825 - 1830)
Artist: C. Amalfi fecit & A. Baldi sculp.
Year: circa 1820
Louis Charles Marie Joseph, prince of the Two Sicilies, Count of Aquila (1824-1897)
Insc.: Biblioteca Conte di Aquila
Artist: Stern sculp.
Year: c. 1870
Son of Francis I, King of the Two Sicilies and of Maria Isabel of Spain. He is the ancestor of the House of the Counts Roccaguglielma who ceased to be dynasts in the Two Sicilies due to the morganatic non-authorised marriage of the prince's son.