The name Klara is a feminine variant of the Latin name Clarus, which means "bright" or "clear." It originated in ancient Rome and was later adopted by various European cultures.

The name gained popularity during the Middle Ages, particularly in Germany and surrounding regions. In the 13th century, the German form Klara emerged as a distinct name, derived from the Latin Clarus. It was widely used among German-speaking populations and gradually spread to other parts of Europe.

One of the earliest and most notable historical figures associated with the name Klara was Saint Clare of Assisi (1194-1253). She was an Italian nun and one of the first followers of Saint Francis of Assisi, founding the Order of Poor Ladies, later known as the Poor Clares. Her life and devotion to poverty and simplicity inspired many women to join her order.

In the 16th century, the name Klara gained prominence in the Netherlands and Scandinavia. One notable figure was Klara Munck (1516-1537), a Danish noble and mistress to King Christian III of Denmark. She played a significant role in the Protestant Reformation in Denmark.

The 18th century saw the rise of several notable figures named Klara, including Klara Zetkin (1857-1933), a German Marxist theorist, activist, and advocate for women's rights. She was a prominent leader in the Social Democratic Party of Germany and a key figure in the establishment of International Women's Day.

Another influential woman with this name was Klara Hitler (1860-1907), the mother of Adolf Hitler. Although her son gained notoriety for his actions during World War II, Klara was known for her kindness and devotion to her family.

In the 19th century, Klara Schumann (1819-1896), a German composer and pianist, made significant contributions to the Romantic music era. She was one of the most renowned pianists of her time and collaborated with her husband, the composer Robert Schumann.

These are just a few examples of notable figures throughout history who bore the name Klara. The name has endured across various cultures and eras, reflecting its rich historical roots and timeless appeal.