The given name Kit has its origins in the Middle English word 'kit', which was a nickname or diminutive form of the name Christopher. The name Christopher is derived from the Greek name 'Christophoros', meaning 'Christ-bearer' or 'he who carries Christ'. It dates back to the early Christian era, around the 4th century AD.

Kit was initially used as a shortened form of Christopher, particularly in England and other parts of the British Isles. During the Middle Ages, it gained popularity as a standalone name, with its first recorded use in this capacity dating back to the 13th century.

One of the earliest known historical figures with the name Kit was Kit Marlowe, an English playwright, poet, and translator, born in 1564. He is renowned for his works such as 'Doctor Faustus' and 'The Jew of Malta'.

Another notable figure was Kit Carson, an American frontiersman and explorer born in 1809. He played a significant role in the westward expansion of the United States, acting as a guide and military officer during the Mexican-American War and the American Civil War.

In the 20th century, Kit Harington, a British actor born in 1986, gained fame for his role as Jon Snow in the popular HBO series 'Game of Thrones'. His portrayal of the character garnered critical acclaim and contributed to the name's resurgence in popularity.

Kit Culkin, an American actress born in 1944, is known for her roles in films such as 'Taxi Driver' and 'The Age of Innocence'. She is also the mother of actors Macaulay Culkin and Kieran Culkin.

Kit Kittredge, a fictional character and the protagonist of the American Girl book series and film of the same name, is a young aspiring journalist living during the Great Depression. The character, created in the late 20th century, helped popularize the name among young readers.

While the name Kit has its roots in the English language and culture, it has gained widespread use and recognition worldwide, transcending cultural boundaries and inspiring variations in different languages and regions.