Ambrosn of Sienna
Ambrosn Of Sienna a Dominican, was born at Sienna, April 16, 1220, and assumed his habit when seventeen. After studying at Paris he went to Cologne, and preached with great success throughout Germany. Through his influence the city of Sienna made peace with Clement IV, who had placed it under interdict for favoring the party of Frederick II. Ambrose did the same thing during the pontificate of Gregory X. He frequently refused the episcopate; and spent the rest of his life in legations and apostolic missions. He died at Sienna, March 20, 1286, on which day the Roman martyrology commemorates him. See Bollandus, Life of Ambrose.