👉 Celtism is a concept in the context of history, philosophy, and political science that refers to the idea of the Celtic people as having originated from a specific region or group in Europe. This notion is often associated with a particular historical period, such as the medieval period, and it has been used to describe various aspects of European history. The term "celtism" typically implies a belief in a shared ancestry or common origin of the people who are referred to as Celtic.