The name Cosette has its origins in the French language and culture, with its earliest known usage dating back to the 19th century. It is believed to be a diminutive form of the name Nicolette, which itself derives from the Greek name Nikolaos, meaning "victory of the people."

Cosette gained widespread recognition and popularity after being featured as the name of one of the main characters in Victor Hugo's acclaimed novel "Les Misérables," published in 1862. In the novel, Cosette is the adopted daughter of the protagonist, Jean Valjean, and her story is central to the narrative's exploration of themes such as compassion, redemption, and social injustice.

While the name Cosette does not have a particularly long or well-documented history prior to its appearance in "Les Misérables," it has since become a beloved and enduring choice for baby names, particularly in French-speaking regions and among those with an appreciation for literary references.

One of the earliest recorded individuals with the name Cosette was Cosette Harcourt, a French artist born in 1884 and known for her paintings and illustrations. Another notable figure was Cosette Thomas, an American writer and journalist born in 1925, who authored several books on travel and culture.

In the world of entertainment, Cosette Comegys was an American actress born in 1903, best known for her roles in silent films during the 1920s. More recently, Cosette Pavlovic was a Serbian-born Australian actress born in 1940, who appeared in numerous television shows and films throughout her career.

Another individual of note is Cosette Annarummo, an Italian-American artist and sculptor born in 1925, whose works have been exhibited in galleries and museums around the world. Her artistic contributions have helped to further the legacy and recognition of the name Cosette.

While the name Cosette may not have a particularly ancient or mythological origin, its association with Victor Hugo's literary masterpiece has imbued it with a sense of cultural significance and enduring appeal, ensuring its continued use and appreciation across generations.