The name Kase is believed to have originated from the Old Norse language, which was spoken by the ancient Scandinavian people during the Viking Age. The name likely derives from the Old Norse word "kas," which means "case" or "box." It's possible that the name was initially used as a nickname or occupational name for someone who made or worked with cases or boxes.

In the early medieval period, the name Kase was primarily found in Scandinavia, particularly in present-day Norway, Sweden, and Denmark. As the Vikings explored and settled in various parts of Europe, the name may have spread to other regions, such as the British Isles and parts of mainland Europe.

One of the earliest recorded instances of the name Kase can be found in the Icelandic Sagas, a collection of historical narratives written in the 13th and 14th centuries. These sagas often mentioned the names of individuals who lived during the Viking Age, suggesting that the name Kase was in use among the Norse people as early as the 9th or 10th century.

Throughout history, there have been several notable individuals who bore the name Kase. One of the earliest recorded figures was Kase Grimsson, a Norwegian chieftain and landowner who lived in the late 10th century. Another notable figure was Kase Thorvaldsson, a Viking explorer and settler who is believed to have been among the first Europeans to reach North America, circa 1000 CE.

In the later medieval period, the name Kase appeared in various historical records from Scandinavia and other parts of Europe. For instance, Kase Eriksson was a Swedish knight who fought in the Northern Crusades in the 13th century. Kase Jönsson was a Danish merchant and ship owner who lived in the 15th century and was involved in the Hanseatic League.

Moving into the early modern period, Kase Olafsson was a Norwegian sea captain and explorer who sailed for the Danish-Norwegian navy in the 17th century. He is known for his explorations of the Arctic regions and for mapping parts of Greenland and the Canadian Arctic Archipelago.

While the name Kase has been relatively rare throughout history, it has persisted in Scandinavia and other parts of Northern Europe. Some other notable individuals who bore this name include Kase Nilsson, a Swedish farmer and landowner in the 18th century, and Kase Johansson, a Norwegian artist and painter in the 19th century.