Though no one would be able to even estimate the date of his birth until many years later, it was mostly likely in 1848, making him twenty-three that year and eight years younger than Mackenzie, who was also so young that few people in Texas, Indian or white, knew much about him at the time. Both men achieved their fame only in the final, brutal Indian wars of the mid-1870s. Quanah was exceptionally young to be a chief. He was reputed to be ruthless, clever, and fearless in battle.

Excerpted from Empire of the Summer Moon by S.C. Gwynne.