Alessandra Belagomba is the Italian princess who lives in the castle.
Puss in Boots: The Three Diablos
Puss in Boots is riding his horse through the desert when he is captured by Italian knights. He is then taken to Princess Alessandra Belagomba, whose "Heart of Fire" Ruby, the crown jewel of her kingdom, is missing.
At first, it is believed that Puss is being wrongfully charged for the theft, but it later turns out that the Princess only wants to hire him based on his reputation, revealing that a thief called "The Whisperer" was the one who committed the crime and that the Princess' knights have captured three of his henchmen. The henchmen turn out to be three kittens called the Three Diablos. Though Puss cannot believe that such innocent creatures could be thieves, the princess and her guards are terrified of them. The kittens kindly agree to help Puss on the premise that they will be free if they return the ruby.
Puss then returns the heart to the Princess and is rewarded with gold, and he gives the Princess the kittens as her new personal bodyguards. They then say their goodbyes and Puss claims "He will never forget them, just as he is sure they will never forget the name of Puss in-"; unfortunately, the guards slam the doors before he can finish his goodbye.