During the war with Siena in 1554, Cellini was appointed to strengthen the defences of his native city, and, though rather shabbily treated by his ducal patrons, he continued to gain the admiration of his fellow citizens by the magnificent works which he produced. According to Cellini's autobiography, it was during this period that his personal rivalry with the sculptor Baccio Bandinelli grew. On 26 February 1556, Cellini's apprentice Fernando di Giovanni di Montepulciano accused his mentor of having sodomised him many times while "keeping him for five years in his bed as a wife". This time the penalty was a hefty 50 golden scudi fine, and four years of prison, remitted to four years of house arrest thanks to the intercession of the Medicis. In a public altercation before Duke Cosimo, Bandinelli had called out to him "" (Shut up, you filthy sodomite!) Cellini described this as an "atrocious insult", and attempted to laugh it off.