The given name Micky originated from the medieval English diminutive form of the name Michael. It first appeared around the 12th century as a nickname derived from the Hebrew name Mikhael, which means "one who is like God." The name Michael was immensely popular among Christians due to its biblical roots and association with the archangel Michael.

One of the earliest recorded instances of the name Micky can be found in the Domesday Book, a manuscript record of landowners in England, completed in 1086 under the order of William the Conqueror. It listed a landowner named "Micki" in Suffolk.

In the late 14th century, the name appeared in Geoffrey Chaucer's "The Canterbury Tales," where a character named "Micky" was mentioned. This literary reference suggests that the name was in use among the common people during the Middle Ages.

During the Renaissance period, Micky became a popular nickname for Michael, particularly in England and Scotland. One notable bearer of the name was Micky Milne (c.1500-1568), a Scottish poet and dramatist known for his satirical works.

In the 17th century, Micky Steele (1670-1720), an English actor and playwright, gained recognition for his contributions to the theater. His works, such as "The Conscious Lovers," were widely acclaimed.

The name Micky continued to be used throughout the 18th and 19th centuries. Micky Rooney (1920-2014), an American actor and comedian, was one of the most famous bearers of the name in modern times. He had a prolific career spanning nine decades and received numerous accolades, including an Honorary Academy Award.

Another notable figure with the name Micky was Micky Dolenz (born 1945), an American actor, singer, and musician best known as a member of the 1960s pop-rock band, The Monkees. He achieved great success with the band and later pursued a solo career in music and television.