The Travels and Adventures of Monsieur Violet in California, Sonora, and Western Texas by Frederick Marryat

At that time, the Pawnee Picts, themselves an offset of the Shoshones and Comanches, and speaking the same language -- tribe residing upon the northern shores of the Red River, and who had always been at peace with their ancestors, had committed some depredations upon the northern territory of the Comanches.

The chiefs, as usual, waited several moons for reparation to be offered by the offenders, but as none came, it was feared that the Picts had been influenced by the American agents to forget their long friendship, and commence hostilities with them. It was, therefore, resolved that we should enter the war path, and obtain by force that justice which friendship could no longer command.