Brythunia is a kingdom of the Hyborian Age, a land of kilted warriors that lies to the west of Zamora. In the geography of Conan's world, it is one of the many nations that border the crossroads of civilization, and its mention in the tale serves to orient the reader within a vast and varied continent. When Subotai first points out the lands to Conan as they approach the border of Zamora, he names Brythunia as the territory to the west, while the river to the east leads into Turan, and the south holds Zamora itself. This positioning places Brythunia within a network of kingdoms that includes the riches of Iranistan, the spiced fruits of Turan, the pearls of Khosala, the gems of Vendhya, and the wines of Shem, all of which pass through the caravans of Zamora. Brythunia is thus established as part of the larger Hyborian world, a land of warriors and clans that stands in contrast to the decadent cities of the south.

A Land of Kilted Warriors

The people of Brythunia are characterized by their distinctive dress and martial bearing. In the bustling streets of Shadizar, Conan observes a colorful throng of merchants, artisans, farmers, soldiers, whores, beggars, urchins, and priests, and among them he sees kilted Brythunians. This brief glimpse of Brythunian warriors in the capital of Zamora suggests that they are a recognizable people, known for their distinctive clothing and their presence in the cosmopolitan cities of the Hyborian world. The image of the kilted Brythunian stands in contrast to the other peoples Conan encounters, such as the squat Shemites with curly beards, the lean Zuagirs in head cloths, the booted Corinthians, and the turbaned Turanians. Each of these peoples is defined by a single, striking feature, and for the Brythunians that feature is their kilt, a garment that marks them as a distinct and identifiable nation within the diverse tapestry of the Hyborian Age.

The Spread of the Serpent Cult

Brythunia's significance in the narrative lies not in its own adventures, but in its role as a marker of the spreading influence of the Cult of Set. When King Osric of Zamora laments the presence of Thulsa Doom in his kingdom, he speaks of snakes to the west, to the south, in Brythunia, in Corinthia, everywhere. The mention of Brythunia alongside Corinthia and the other lands of the west establishes that the corruption of the serpent cult is not confined to Zamora alone, but has spread across the entire Hyborian world. Everywhere there are black towers with black-hearted priests, and everywhere they steal away children and turn them into monsters, into reptiles like the snakes they worship. The corrupted young raise their envenomed fangs against their very parents, and the rot has reached even the kilted warriors of Brythunia. This expansion of the cult's reach is a key element of the threat that Conan and his companions must face, and it gives a sense of the scale of Thulsa Doom's power. The king's words suggest that Brythunia, like Zamora, has fallen under the shadow of the serpent god, and that its people, once proud warriors, have been weakened by the false religion that has taken hold among the young.

A Kingdom in Decline

The spread of the Cult of Set is part of a broader decline that Osric sees in the world around him. He laments that each generation is weaker than the one before, and that today's young wallow in the snake cult, a false religion that makes them yearn to be slaves and beggars, drugged dreamers. When he was young, boys strove to be heroes, not parasites and destroyers. This generational decay is not confined to Zamora, but is a symptom of the wider corruption that has infected the Hyborian kingdoms, including Brythunia. The kilted warriors of the west, once a proud and martial people, have been weakened by the insidious influence of the serpent cult, and their young have been turned against their own parents. Brythunia thus serves as an example of the decline that threatens the entire Hyborian world, a land whose strength has been sapped by the false promises of Thulsa Doom. The kingdom is a reminder that the battle against the cult is not just a local struggle, but a fight for the very soul of civilization, and that even the most distant lands are not safe from the serpent's reach.