Onorato I Caetani
Onorato I Caetani (c. 1336–1400) was count of Fondi and a powerful baron of the Papal States and Naples. Succeeding his father around 1348, his rule was confirmed by Queen Joanna I in 1352.
In September 1378 he sheltered the French cardinals at Fondi, who elected Robert of Geneva as the antipope Clement VII, opening the Western Schism. He backed Anjou against Ladislaus; excommunicated by Boniface IX and defeated by papal and Neapolitan armies, he died at Fondi in April 1400.