Ancient Celtic religion

Ancient Celtic religion, often called Celtic paganism, was the belief system of the Celtic peoples across Europe. It was a polytheistic religion, meaning followers worshipped many different gods and goddesses.

This faith was part of a larger group of Indo-European religions during the Iron Age. While specific deities changed based on the region or time, there was a basic religious homogeneity among the people. This means they shared many similar underlying ideas and patterns of worship. Because the Celts left no native written records of their own beliefs, historians must piece together their world from other sources.

To understand these beliefs, researchers use three main types of evidence. First, they study archaeology, which includes physical objects found in the earth. Second, they examine Greco-Roman accounts written by outsiders. Third, they look at medieval literature from Ireland and Wales.

However, these sources can be difficult to interpret. Greco-Roman writers often viewed the Celts as "barbarians" and may have been biased. They sometimes wrote to make the Celts look uncivilized to justify Roman conquest. Similarly, medieval Christian monks wrote down Celtic myths centuries after the original religion ended. These monks often treated former gods as historical heroes rather than divine beings.

The mechanics of Celtic worship involved various sacred spaces and ritual actions. Many ceremonies took place in sacred groves or natural shrines called nemetons.

Some communities also constructed formal temples or ritual enclosures. To communicate with the divine, people made votive offerings. These were gifts deposited in wetlands, water, ritual shafts, or wells.

Evidence also shows that the Celts sacrificed animals, usually livestock or working animals. Some ancient writers, such as Julius Caesar, claimed that the Gauls practiced human sacrifice by burning people in large wicker structures. While these claims are debated by modern scholars, they remain a part of the historical record.

Celtic deities were diverse and often categorized by their roles or regions. Many gods had names that appeared in different forms across various tribes. Some were pan-regional, meaning they were worshipped over very large areas. Others were local, tied to a specific tribe or small territory. A common theme in their theology was triplicity, where certain deities were seen as threefold, such as the Three Mothers.

Many gods had specific domains, such as craft, war, or nature. For example, Lugus was a god of skill and craft, while the smith god was named Gobannos. Healing deities, like Sirona or Borvo, were frequently associated with sacred springs.

Specific gods can be identified through surviving names and descriptions. Taranis was a celestial god associated with thunder, the bull, and the wheel. Epona was a widely recognized goddess of horses.

Cernunnos is a famous deity often depicted as a horned god. The Celts also recognized a father god, often linked to the tribe and the dead, such as Toutatis. A mother goddess, like Matrona, was often associated with the land, fertility, and the earth. Some mother goddesses, such as Andraste, also served as protectors of the tribe during war.

The history of Celtic religion is a story of change and mixing. Following the Roman conquest of Gaul between 58 and 51 BCE, and southern Britain in 43 CE, religions began to merge. This resulted in a syncretic Gallo-Roman religion, where Celtic and Roman gods were combined. Examples include Lenus Mars and Apollo Grannus.

Eventually, the Gauls converted to Christianity starting in the third century. In Britain, after Roman rule ended around 410 CE, Anglo-Saxon paganism began to replace Celtic traditions. In Ireland and Britain, the full shift to Christianity occurred from the fifth century onward.

Despite these changes, Celtic religion left a lasting legacy. Its influence can be seen in the mythology of Celtic nations and in modern movements. In the 20th century, Celtic neopaganism emerged as a new religious movement. These groups range from Reconstructionists, who try to practice the ancient religion with high accuracy, to New Age or eclectic groups. Some of these modern followers identify with Neo-Druidry. Even today, the complex patterns and myths of the ancient Celts continue to inspire wonder and study.