 Their feud continued over the casting of the 1625 revival of "La regina Sant'Orsola" and culminated in 1627 during the preparations for the wedding of Margherita de' Medici and Odoardo Farnese.The opera Salvadori had originally planned for the festivities was his "Iole ed Ercole" (Iole and Hercules) for which Jacopo Peri had composed the music.Caccini took her revenge by convincing Margherita and her mother, Grand Duchess Maria Maddalena, that the subject of the opera might be interpreted as reflecting Margherita's desire to control her new husband.