Yuac
Yuac appears in accounts of the Zacateco leaders who resisted Spanish expansion north of the mining town of Zacatecas. Their communities ranged through the country around San Martín, Sombrerete and the road toward the Río Grande. During the Chichimeca War, groups from these districts attacked travelers and settlements as the Spanish sought to secure the mining routes. The leader of Yuac was named alongside those of Chalchihuites, Papantón and Sombrerete in accounts of the frontier.