The given name Lacie is a modern variant spelling of the French feminine name Lacy, which is derived from the Old French word "lace" meaning "cord" or "lacework". This name has its origins in the Middle Ages and was initially used as an occupational surname for lacemakers or lace merchants.

In the 12th century, the name Lacy appeared as a surname in England, particularly associated with the noble Lacy family who held lands in Lincolnshire and Yorkshire. The Lacy family played a significant role in the Norman conquest of England and the subsequent establishment of the feudal system.

While the name Lacy has a long history as a surname, its use as a given name for women is relatively modern, dating back to the late 19th century. One of the earliest recorded examples of Lacy as a first name was Lacy Sturdivant, an American author born in 1865 in North Carolina.

Throughout history, several notable individuals have borne the name Lacy or its variant spellings. One prominent figure was Lacy Dayrall, a 17th-century English writer and poet who lived from 1619 to 1672. Another was Lacy Dornbusch, an American artist and illustrator active in the early 20th century, known for her work in children's books.

In the realm of literature, the name Lacy appears in the novel "The Pioneers" by James Fenimore Cooper, published in 1823. The character Lacy Cameron is a minor but memorable figure in the story.

Additionally, Lacy J. Dalton, an American country music singer-songwriter born in 1946, has contributed significantly to the genre, with several hit songs and albums throughout her career.

While the name Lacie is a relatively modern spelling variant, it has become increasingly popular in recent decades, particularly in English-speaking countries like the United States and the United Kingdom.