An American historian and biographer, he profiled some of the Twentieth Century's most famous leaders, including John F. Kennedy and Douglas MacArthur. He received both the Abraham Lincoln Literary Award and the National Humanities Medal.
He enlisted in the U.S. Marine Corps and served in the Pacific theater of World War II. He detailed his wartime experiences in his 1980 memoir, Goodbye, Darkness.
His bestselling 1967 work, The Death of a President, investigated the assassination of John F. Kennedy and sold millions of copies, despite mixed critical reviews.
He grew up in Attleboro, Massachusetts and graduated from Massachusetts State College. In 1948, he married Julia Brown Marshall, with whom he subsequently had three children.
At the time of his death, Manchester was working on the third and final volume of The Last Lion: The Defender of the Realm, his biography of Winston Churchill.