AMBROSE (Saint) Confessor (March 20) (13th century) A Saint of Siena, one of the illustrious family of the Sansedoni, who at an early age entered the Order of Saint Dominic. By Order of Pope Gregory X, he preached the Crusade, in his age a thankless task. He met with better success in reconciling the Church and people of Siena with the Holy See. He died at the age of sixty-six, A.D. 1286. In art he is represented as holding in his hand a model of his native city.