Eystein

Eystein is a masculine given name of Norwegian origin. It is the Norwegian form of the Old Norse name Eysteinn (often written Øystein in modern Norwegian). The name has a long association with Norwegian history and is part of the broader Nordic tradition of names formed from Germanic elements in Norse language.

Historical usage: In medieval Norway, two kings bore the name Eystein: Eystein I and Eystein II. They are recorded in the annals as rulers whose reigns contributed to the early Norwegian monarchy and its dynastic development.

Modern usage: Today, Øystein is the common Norwegian spelling; Eystein is less common but still encountered, especially in historical or formal contexts. The name is used in Norway and other Nordic countries, and is sometimes Anglicized as Oystein in international usage.