Pedigree

            /Alberto d'Este
        /Niccolò d'Este
       |    \Isotta Albaresani
    /Ercole I d'Este
   |    \Ricciarda di Saluzzo
Alfonso I d'Este
   |        /Alfonso V d'Aragon
   |    /Ferdinand d'Aragon
   |   |    \Margarita de Hijar
    \Eleonore d'Aragon
       |    /Tristano de Clermont-Lodève
        \Isabella de Clermont-Lodève
            \Catarina Orsini

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