Thyr humans trace their origins to the lost magocracy of Thyrandia, famously ruled by the Black Queen during the Age of Darkness. Thryandia perished in flames during the Darkness, but it's capital was rebuilt as Thyr (from which the humans west of Vallas and south of Segovia identify themselves), a city-state which has remained neutral from other political factions for the thousand years since it's reestablishment.
Common Etiquette rules
Hospitality above all.
Common Dress code
Dress is very meticulous: citizens of Thyr take their outward appearance very seriously. Their dress and manner depict their profession, status, and self-image.