In mid-1853, the Ahwahneechee returned to the valley,[19] but they subsequently betrayed the hospitality of their former Mono hosts by stealing horses that the Mono had taken from non-indigenous ranchers. In return, the Monos tracked down and killed many of the remaining Ahwahneechee, including Tenaya; Tenaya Lake is named after the fallen chief. Hostilities subsided and by the mid-1850s local European American residents started to befriend Native Americans still living in the Yosemite area.