The name Daisy originated from the Old English word "dægeseye", which literally translates to "day's eye". This was a reference to the small white and yellow flowers that open their petals at dawn and close them at dusk, appearing to "wake up" and "fall asleep" with the rising and setting of the sun. The name is derived from the combination of the Old English words "dæg", meaning "day", and "eage", meaning "eye".

Prior to becoming a popular given name, Daisy was primarily used as a nickname or term of endearment for someone considered fresh, pure, and innocent, much like the delicate and simple daisy flower. The earliest recorded use of Daisy as a given name dates back to the late 16th century, though it remained relatively uncommon until the 19th century.

One of the earliest known historical figures with the name Daisy was Daisy Greville, Countess of Warwick (1891-1938), an English aristocrat and author known for her unconventional lifestyle and progressive political views. Another notable Daisy was Daisy Ashford (1881-1972), an English writer and novelist who gained fame as a child prodigy for her novella "The Young Visiters" written at the age of nine.

Daisy Miller (1878-1923) was a fictional character created by Henry James in his 1878 novella of the same name. The story, which explores the cultural clash between American and European societies, helped popularize the name Daisy in both literature and real life.

Daisy Bates (1859-1951) was an Australian anthropologist and journalist who dedicated her life to studying and advocating for the rights of Aboriginal Australians. Her name became synonymous with her tireless efforts to preserve and document indigenous cultures.

Daisy Ridley (born 1992) is a contemporary English actress best known for her role as Rey in the Star Wars sequel trilogy. Her portrayal of the strong, resilient, and independent heroine has further cemented the name Daisy as a symbol of strength and determination in modern pop culture.