The history of Celts and red hair

Red hair has long been associated with the Celts, evoking vivid imagery of fiery-haired warriors, spirited mythology, and distinct cultural symbolism.
Having such a unique hair colour, though rare globally at around 1-2%, has been particularly prominent in regions historically linked to Celtic tribes, such as Ireland, Scotland, and parts of Wales. As redheads ourselves, we all know this, seeing as everyone assumes we are either Celtic somewhere in our bloodline. But where did this association come from?
The genetic origins of red hair
The root of red hair (pun intended) lies in a variation of the MC1R gene. This gene variant is recessive, requiring both parents to carry it for their child to inherit red hair. Researchers believe this trait became more prevalent in regions with limited sunlight, such as Northern and Western Europe, because the lighter pigmentation helped the body produce vitamin D during long, dark winters (which we can count among one of our genetic superpowers, why thank you).
Red hair is most commonly found in Celtic populations. Approximately 10% of Irish and Scottish people have red hair, with up to 40% carrying the gene. The ancient Greeks and Romans observed this striking feature, often automatically describing the Celts as red-haired.
Red hair in Celtic mythology and society
For the Celts, red hair was more than a genetic coincidence—it carried profound cultural and symbolic meaning. Celtic mythology is rich with fiery-haired characters, often portrayed as strong, passionate, and otherworldly. One of the most famous examples is the hero Cú Chulainn from Irish legend. Known for his fiery temperament and immense strength, he is often depicted with wild, unkempt hair, often in a reddish colour. This imagery underscores the connection between red hair and heroism.
Red hair also symbolised a fiery and formidable spirit in Celtic society. Warriors with red hair were sometimes seen as embodying a stronger connection to the divine or supernatural, perhaps due to their unique appearance.
The association with red hair extended to women as well. Celtic goddesses like Macha are often imagined with red hair, embodying power and passion. These depictions reflect how red hair was part of a larger tapestry of symbolic imagery in Celtic culture.
How Ancient Accounts Perceived the Celts and Their Red Hair
Classical writers like the Greeks and Romans were fascinated by the Celts’ distinctive appearance, which included pale skin, tall stature, and fiery hair. Julius Caesar himself noted the Celts’ distinctive physical traits in Commentarii de Bello Gallico, his account of the Gallic Wars. While these descriptions were sometimes exaggerated, they contributed to the lasting cultural association and expectation between the Celts and red hair.
Red hair in Celtic art and folklore
Celtic art rarely depicted individuals in great detail, but symbolism was always significant. Red pigments were sometimes used in carvings or illustrations, hinting at the resonance of the colour symbolising power, danger and passion. Alongside this, Celtic folklore includes many tales of red-haired individuals, often emphasising their bravery, wit, or dangerous temper.
The connection between red hair and fire is also a recurring motif. Fire was a sacred element in Celtic rituals. Red-haired individuals may have been seen as embodying fire’s essence, reinforcing their association with passion, vitality, and the sacred.
Today, red hair remains a point of pride in regions with strong Celtic heritage, with redheads often perceived as carrying a link to their Celtic ancestry (cue every stereotype a redhead has ever heard!). The stereotype of the “fiery redhead” continues to persist too, rooted in the historical and cultural associations that stretch back thousands of years.
The connection between the Celts and red hair is a product of both genetics and culture. While the MC1R gene may explain the prevalence of red hair in Celtic populations, the Celts themselves imbued this physical trait with rich symbolic meaning. From legendary heroes and mythic goddesses to awe-inspiring warriors and fire-fuelled rituals, red hair has been a vibrant thread in the fabric of Celtic history.

