The name Kasie is believed to have originated from the German language, derived from the Germanic root word "kat" or "kas," which means "brave" or "bold." This name gained popularity during the Middle Ages across various regions of central and northern Europe.

One of the earliest recorded instances of the name Kasie can be found in the Codex Manesse, a 14th-century German manuscript containing a collection of Middle High German poetry. In this text, Kasie is mentioned as the name of a minor nobleman from the region of Swabia, now part of modern-day Germany.

Throughout history, several notable individuals have borne the name Kasie. One such figure was Kasie von Rothenburg (1410-1478), a German knight and military commander who fought in the Hussite Wars against the Bohemian Protestants in the 15th century. His bravery and leadership on the battlefield earned him recognition among his contemporaries.

In the 16th century, Kasie Fugger (1529-1592) was a prominent member of the wealthy and influential Fugger family of merchants and bankers from Augsburg, Germany. She was known for her philanthropic efforts and her support of the arts and sciences during the Renaissance period.

Moving forward to the 19th century, Kasie Mendoza (1823-1898) was a renowned Spanish painter and one of the leading figures of the Romantic movement in Spanish art. Her works, often depicting scenes from rural life and landscapes, were highly acclaimed for their vivid colors and expressive brushwork.

Another notable bearer of the name was Kasie Steinbach (1875-1942), a German-American architect who played a significant role in the early 20th century architectural scene in New York City. Steinbach was responsible for designing several iconic buildings, including the Steinway Hall and the Woolworth Building, which was once the tallest skyscraper in the world.

While these are just a few examples, the name Kasie has been carried by individuals from various walks of life throughout history, each leaving their mark in their respective fields and contributing to the rich tapestry of human endeavor.