Describe Luigi and Angelo Capello.

Luigi and Angelo Capello are the Italian twins who respond to Aunt Patsy's ad and rent a room in her home. Their father was a Florentine nobleman, but because he was on the losing side of a war, the Capello family was forced to flee to Germany. After the death of their parents, Luigi and Angelo were sold into servitude to pay off their parents' debts. They were put to work as attractions in a Berlin museum, where they are not compensated for their labor and must beg for food. However, fluent in four languages and musical prodigies, the twins are able to pull themselves out of this slavery. In Dawson's Landing, they are widely admired, particularly after Luigi honorably engages Judge Driscoll in a duel. However, their reputation is tarnished after Tom spreads rumors that the reward the twins offered for their stolen knife is a hoax, and when Judge Driscoll suggests that Luigi is an assassin. They are accused of murdering Judge Driscoll, and are defended by Pudd'nhead Wilson. After being cleared of the charges, they decide they have had enough of the American West and return to Europe.