The given name Clyde originated from the Scottish Gaelic language. It derives from the Celtic word "cluain" which translates to "good pasture" or "green meadow." The name was initially used as a place name, referring to the River Clyde that runs through central Scotland.

Clyde was initially adopted as a given name in Scotland during the medieval period. One of the earliest recorded instances of the name dates back to the 12th century, when a man named Clyde was mentioned in the Chartulary of Moray, a medieval Scottish cartulary.

In ancient Scottish folklore, the name Clyde is associated with a mythical figure known as the "Elk of Clyde." According to legend, this massive elk roamed the banks of the River Clyde and was eventually slain by a famous Scottish warrior.

Throughout history, several notable individuals have borne the name Clyde. One of the most famous was Clyde Tombaugh (1906-1997), an American astronomer who discovered the dwarf planet Pluto in 1930. Another prominent Clyde was Clyde Fitch (1865-1909), an American playwright and dramatist renowned for his works in the late 19th and early 20th centuries.

In the world of sports, Clyde Drexler (born 1962) was a former professional basketball player who won an NBA championship with the Houston Rockets in 1995. Clyde Beatty (1903-1965) was an American animal trainer and circus performer, best known for his act with lions and tigers.

Clyde W. Tombaugh (1906-1997), an American astronomer and discoverer of the dwarf planet Pluto, is another notable bearer of the name. His groundbreaking discovery in 1930 led to a significant advancement in our understanding of the solar system.