The name Harley is of English origin, derived from the Old English words "hara" meaning "hare" and "leah" meaning "meadow" or "clearing." It's believed to have originated as a surname referring to a meadow or clearing where hares were found.

In its earliest recorded use, the name Harley appeared as a surname in the Domesday Book of 1086, a survey of England commissioned by William the Conqueror. The entry referred to a place called "Herleia" in Nottinghamshire.

One of the earliest documented instances of Harley as a first name dates back to the 13th century. A man named Harley de Mascy was mentioned in records from Cheshire, England, in 1230.

Throughout history, several notable individuals have borne the first name Harley. One of the most famous was Sir Harley Granville-Barker (1877-1946), an English actor, director, and playwright. He was a prominent figure in the early 20th century and helped establish the modern approach to Shakespearean productions.

Another notable Harley was Harley Earl (1893-1969), an American automotive designer and engineer. He was the visionary behind the iconic designs of many classic cars from General Motors, including the Chevrolet Corvette and the Cadillac tailfins.

In the world of literature, Harley Granville-Barker (1910-1986), an English writer and critic, made significant contributions to the study of Shakespeare's works. He was also a respected playwright and novelist.

Harley Parker (1915-1992) was an American professional baseball player who played for the Boston Red Sox and the St. Louis Browns in the 1940s. He was known for his defensive skills as an outfielder.

Harley Hotchkiss (1927-2011) was an American businessman and entrepreneur who founded several successful companies, including Hotchkiss Associates and Hotchkiss Domestic LLC. He was known for his innovative approach to product development and marketing.