The name Truman has its roots in the Middle English word "trewe," meaning faithful or true. It likely originated as a surname during the medieval period, describing someone who was considered trustworthy or loyal. The name eventually transitioned into being used as a given name in the English-speaking world.

One of the earliest recorded examples of the name Truman can be found in the 17th century, with the birth of Truman Seymour in 1634 in Hartford, Connecticut. Seymour was a prominent figure in the early colonial era of New England, serving as a magistrate and deputy governor of the Connecticut Colony.

In the 18th century, Truman Osborn (1752-1828) was an American Revolutionary War soldier who fought in several significant battles, including the Battle of Bunker Hill and the Battle of Saratoga. He later became a prominent businessman and landowner in Wilbraham, Massachusetts.

The 19th century brought us Truman Smith (1809-1890), a prominent American businessman and politician who served as a United States Representative from Connecticut. He was also involved in the early development of the railroad industry in New England.

One of the most famous individuals with the name Truman was the 33rd President of the United States, Harry S. Truman (1884-1972). Born in Missouri, Truman served as President from 1945 to 1953, leading the nation through the final stages of World War II and the early years of the Cold War.

Another notable figure was Truman Capote (1924-1984), an American novelist and playwright best known for his works such as "Breakfast at Tiffany's" and "In Cold Blood." Capote was a significant literary figure in the 20th century and is widely regarded as one of the most influential writers of his time.