The name Jaelle is a French variation of the Hebrew name Yael, which means "mountain goat" or "ibex." The name has its origins in the Old Testament of the Bible, where Yael is a heroine who killed the Canaanite general Sisera by driving a tent peg through his temple while he slept.

Jaelle became popular in France during the Middle Ages, particularly among the nobility and upper classes. It was seen as a strong and heroic name, reflecting the biblical story of Yael's bravery. The earliest recorded use of the name Jaelle dates back to the 12th century, when it was borne by a noblewoman named Jaelle de Montfort.

In the 13th century, a French saint named Jaelle de Pommiers lived in the region of Normandy. She was known for her piety and charitable works, and her name helped to popularize the name further in France. Another notable figure was Jaelle de Vivonne, a 15th-century French noblewoman who served as a lady-in-waiting to Queen Marie of Anjou.

During the Renaissance, the name Jaelle was particularly popular in France and other parts of Europe. One of the most famous bearers of the name was Jaelle d'Albret, a 16th-century French noblewoman who was a key figure in the Protestant Reformation. She was born in 1528 and played a crucial role in promoting Calvinism in France.

In the 17th century, Jaelle de Bourbon was a French princess and the daughter of King Henry IV of France. She was born in 1603 and was known for her beauty and intelligence. Another notable Jaelle was Jaelle de La Fayette, a 17th-century French writer and author of the novel "La Princesse de Clèves," which is considered one of the first modern novels.

Throughout history, the name Jaelle has been borne by numerous other notable figures, including artists, writers, and aristocrats. While it has never been an extremely common name, it has maintained a consistent presence, particularly in France and other parts of Europe, where it is still used today.