The name Macy has its roots in the Old French language, originating from the Latin name Matthaeus, which is derived from the Hebrew name Mattithyahu, meaning "gift of God." It is believed to have been introduced to England by the Normans after their conquest in 1066.

In the Middle Ages, the name was commonly spelled as "Macy" or "Macey," and it was primarily used as a surname. One of the earliest recorded instances of the name dates back to the 12th century when a person named William Macy was mentioned in the Pipe Rolls of Gloucestershire, England.

The name Macy gained popularity during the Renaissance period, especially among the upper classes. One notable figure who bore this name was Macy Bouton (1580-1648), a French mathematician and astronomer who made significant contributions to the development of logarithms.

In the 17th century, the name Macy became associated with the Quaker community in America. Thomas Macy (1608-1682), a Quaker pioneer, was one of the first settlers of Nantucket Island, Massachusetts, and his descendants played a crucial role in the whaling industry.

Another notable figure with the name Macy was Rowland Hussey Macy (1822-1877), an American businessman who founded the world-renowned department store chain, Macy's. His vision and entrepreneurial spirit helped establish Macy's as a retail giant, and the name became synonymous with shopping and commerce.

In the 20th century, the name Macy gained popularity as a first name, particularly in the United States. One of the most famous individuals named Macy was Macy Gray (born 1967), an American singer, songwriter, and actress known for her unique blend of soul, R&B, and hip-hop music.

Another notable Macy was Macy O'Neal (1950-2019), an American professional wrestler and actress who achieved success in the world of sports entertainment during the 1970s and 1980s.

Macy Halford (born 1985) is a contemporary American writer and editor who has contributed to various publications, including The New Yorker and The Paris Review, and has authored several books.

While the name Macy has its roots in medieval Europe, it has evolved over time and has been embraced by various cultures and communities around the world, reflecting its versatility and enduring appeal.