"Throughout all of Gaul there are two classes of people who are treated with dignity and honor. This does not include the common people, who are little better than slaves and never have a voice in councils. Many of these align themselves with a patron voluntarily, whether because of debt or heavy tribute or out of fear of retribution by some other powerful person. Once they do this, they have given up all rights and are scarcely better than servants. The two powerful classes mentioned above are the Druids and the warriors. Druids are concerned with religious matters, public and private sacrifices, and divination." (Julius Caesar)

The Celts are one of the most well-known groups in Europe and one of the least understood. Depending on which classifications are used, the Celts are also one of the oldest civilizations in Europe. In the centuries before Christ, the Celts were spread out across much of continental Europe, and though they are mostly identified with Gaul, evidence suggests they also spread as far as Portugal. However, even though they were spread out across Europe before the height of the Roman Empire, most people associate the Celts with the British Isles today, particularly Ireland and Scotland.

After they had been relegated to those smaller regions as a result of the Romans and other migrations, the culture of the Celts as it is currently understood began to congeal during the Early Middle Ages, and Celtic culture, folklore, and legend have all become inextricably intertwined with Irish history and British history as a whole.

The Celts have fascinated people for centuries, and the biggest fascination of all has been over the Druids.