Ralph G. Martin was an American journalist who authored or co-authored about thirty books, including popular biographies of recent historical figures, among which, Jennie, a two-volume (1969 and 1971) study of Winston Churchill's American mother, Lady Randolph Churchill, became the most prominent bestseller. Other successful tomes focused on British royal romance (Edward VIII and Wallis Simpson in 1974, as well as Prince Charles and Lady Diana in 1985) and on the Kennedy family (John F. Kennedy in 1983 and Joseph P. Kennedy Sr. in 1995).
Born in Chicago, Martin was eight years old when his family moved to Brooklyn, New York. He studied at City College of New York and, subsequently, the University of Missouri, where he graduated in 1941 with a bachelor's degree in journalism.
Twenty-one years old upon receiving his diploma, Martin decided to hitchhike and found a newspaper job at the Box Elder News Journal which served Brigham City, the county seat of Utah's Box Elder County. In December, following the U.S. declaration of war in the aftermath of the Japanese attack on Pearl Harbor, Martin enlisted in the Army and spent the war as a combat correspondent for the Armed Forces newspaper Stars and Stripes and the Army weekly magazine, Yank. In 1944, after having interviewed New York City's mayor, Fiorello La Guardia, for Yank, Martin asked La Guardia to perform his marriage ceremony to Marjorie Pastel.
Returning to civilian life in 1945, Martin began working as editor for news and analysis publications Newsweek and The New Republic and became executive editor at decorating and domestic arts magazine House Beautiful. During the months preceding the 1952 and 1956 presidential elections, he served as a member of the campaign staff for the Democratic nominee, Adlai Stevenson.
Having lived for years in the Connecticut town of Westport, near New York City, Martin moved to the Kendal on Hudson retirement community in another of the city's suburbs, Sleepy Hollow, where he died seven-and-a-half weeks before his 93rd birthday. He and his wife Marjorie were the parents of two daughters and a son.