The name Sheridan is an English surname that has been adopted as a given name. It originated as a place name in England, derived from the Old English words "scir" meaning "bright" and "dun" meaning "hill" or "fort." The name likely referred to a prominent or distinct hill or fortified settlement.

The earliest recorded use of the surname Sheridan dates back to the 12th century. One of the earliest known bearers of the name was William de Schyridan, who was mentioned in the Pipe Rolls of Nottinghamshire in 1195.

As a first name, Sheridan gained popularity in the 19th century, particularly after the success of the Irish playwright and poet Richard Brinsley Sheridan (1751-1816). Sheridan was a prominent figure in the literary and theatrical circles of his time, and his plays, such as "The Rivals" and "The School for Scandal," are considered among the greatest comedies of the English language.

Another notable bearer of the name was Philip Henry Sheridan (1831-1888), a Union Army general during the American Civil War. Sheridan played a significant role in several major battles, including the Battle of Cedar Creek, and is remembered for his leadership and tactical brilliance.

In the 20th century, Sheridan was the first name of several notable individuals, including:

1. Sheridan Whiteside (1890-1965), an American actor and playwright best known for his role in the play "The Man Who Came to Dinner."
2. Sheridan Morley (1935-2007), a British writer, biographer, and critic who specialized in theater and film.
3. Sheridan Le Fanu (1814-1873), an Irish writer known for his gothic novels and short stories, including "Uncle Silas" and "Carmilla."
4. Sheridan Muir (1896-1975), a Canadian artist and illustrator known for her paintings depicting everyday life in rural Quebec.
5. Sheridan Smith (born 1981), an English actress and singer who has won numerous awards for her performances in television, film, and stage productions.

While the name Sheridan has its roots in England, it has been adopted across various cultures and countries, with individuals bearing this name making significant contributions in various fields, including literature, theater, art, and military history.