della Rovere family

…cardinal of the influential della Rovere family, threatened the pope with deposition and the convocation of a reform council. Politically isolated, Alexander sought assistance from the Turkish sovereign, Bayezid II. In the course of the pope’s meeting with King Charles in Rome in early 1495, however, he received the traditional…

…under the patronage of the Della Rovere family, whose name, meaning “oak tree,” led to the adoption of the oak-leaf motif in wreathed form.