In history, the story of a family is often the story of rivalry. Here we are, as well, confronted with competition lasting centuries. The families Strozzi and Medici are bond by persistent conflict over power, rule and reign. Therefore, it seems ironic when both lineages merge through the marriage of daughters and sons. In 1509 Filippo Strozzi marries Clarice de? Medici, a descendant of Lorenzo ?the Magnificent? and thus unites his family with the one of his arch-rival.The Florentine trader and banker Palla Strozzi had to leave the city after rebelling against the Medici?s hegemony. He and his family were, for decades, punished by excommunication. Palla escaped to Padua, North Italy, and became the prototype of an educated and appreciative Renaissance citizen. With his money, he not only influenced politics, he even became the driving force behind a rich, cultural development. Filippo "the Elder" not only donated the marvellous Palazzo Strozzi and the Cappella Strozzi in Santa Maria Novella, he also was a good friend of the most outstanding artists of his time. The works of Filippino Lippi and Benedetto da Maiano offer information about this friendship. Lorenzo, the son of Filippo, was an enthusiastic expert on antique authors and responsible for the record of the family?s history. Titian was working for Roberto Strozzi in Venice. In this way, the Strozzi family became a symbol for the connection of financial power and patronage of art. The Palazzo Strozzi as well as the Cappella Strozzi in Santa Maria Novella, which are presented in this thesis, are impressive proofs.