List of ambassadors of the United States to Italy
List of U.S. ambassadors to Italy

Name and Title
Presentation of Credentials
Termination of Mission
George P. Marsh, Envoy
1871
July 23, 1882
William Waldorf Astor, Envoy
November 21, 1882
March 1, 1885
John B. Stallo, Envoy
November 27, 1885
June 6, 1889
Albert G. Porter, Envoy
June 6, 1889
July 9, 1892
William Potter, Envoy
December 28, 1892
March 8, 1894

Question: When was Albert G. Porter the US ambassador to Italy?
Answer: Albert G. Porter was the US ambassador to Italy from 1889 to 1892.