The Ragnvindr family is not only notorius for their influence in Mondstadt's wine industry, but also in Mondstadt's history, especially their rebellions. There are only 2 that we know of, that is during the Decarabian Era and Venessa's Rebellion. In the Decarabian Era, which is before Venti ascended to archonhood, one of Diluc's ancestors, a "Red-haired Warrior" was in the group that helped Venti + others in taking down Decarabian. In Venessa'a Rebellion, a "Red-haired Knight", otherwise known as Ragnvindr (where the name of the clan came from) joined the revolution against the oppressive aristocracy with Venessa after being inspired by the Dawnlight Swordswoman, thus dubbing himself as the Dawn Knight.