The name Jill is a diminutive form of the feminine given name Gillian, which is derived from the masculine name Julian. The name Julian has its origins in the Roman family name Julianus, which was derived from the name Julius. Julius was a prominent Roman family name, believed to be related to the Greek word ioulos, meaning "downy-bearded."

The name Jill gained popularity in the Middle Ages, particularly in England and other parts of Europe. It was often used as a shortened version of Gillian, which was a common name during that time period. The earliest recorded instance of the name Jill can be found in the 14th century English poem "The Vision of Piers Plowman" by William Langland.

In literature, one of the most famous references to the name Jill is in the nursery rhyme "Jack and Jill," which dates back to the 18th century. The rhyme depicts the characters Jack and Jill going up a hill to fetch a pail of water, with Jill famously taking a tumble.

Historically, several notable individuals have borne the name Jill. One of the earliest was Jill of Barnstaple, a 14th-century English nun known for her piety and charitable works. Another notable figure was Jill Ker Conway (1934-2018), an Australian-American scholar and author who served as the first female president of Smith College.

In the realm of entertainment, Jill St. John (born 1940) is an American actress and former singer, known for her roles in films such as "Diamonds Are Forever" and "The Nutty Professor." Jill Clayburgh (1944-2010) was an American actress and Academy Award nominee, acclaimed for her performances in movies like "An Unmarried Woman" and "Starting Over."

Jill Dando (1961-1999) was a British journalist and television presenter, tragically murdered in 1999. Her death received widespread media attention and sparked a major investigation, though her killer was never conclusively identified.

These are just a few examples of notable individuals who have carried the name Jill throughout history, showcasing its enduring presence across various cultures and time periods.