Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Jay Pierrepont Moffat (7 January 1896 January 25, 1943) was an American diplomat, historian and statesman who, between 1917 and 1943, served the State Department in a variety of posts, including that of Ambassador to Canada during the first year of U.S. participation in World War II.A native of Rye, New York, Moffat was a professional diplomat who had previously served as the private secretary to the American Ambassador to the Netherlands (1917-19), followed by service as secretary of the American legation in Warsaw (1919-21) and in Tokyo (1921-23). Between 1925 and 1927 he served President Calvin Coolidge as Ceremony Officer at the White House and in 1927, at the end of his assignment, he was married in Hancock, New Hampshire to Lilla Cabot Grew, the daughter of fellow diplomat Joseph C. Grew who, while Moffat was serving in his final post as ambassadorto Canada, was the U. S. Ambassador to Japan at the time of the December 7, 1941 attack on Pearl Harbor.