From their home in the Upper Yakima valley, Qualchan, his family, and friends traveled all over the Pacific Northwest, particularly over the Cascade Mountains to the area now known as Seattle, and across the Columbia River to the small town of Portland.
Qualchan would frequently attack prospectors, miners and others, selling their supplies to The Dalles and other settlements in exchange for weapons and calicos.
[3] During one skirmish in mid-March 1856, he and Chief Leschi led an attack against Connell's Prairie but were driven back by militiamen under Gilmore Hays.
[4] According to Assistant Adjutant General William W. Mackall, in a letter addressed to the Department of the Pacific at Fort Vancouver on June 18, 1858, Kamiakin and Qualchan, cannot longer be permitted to remain at large or in the country, they must be surrendered or driven away, and no accommodation should be made with any who will harbor them; let all know that asylum given to either of these troublesome Indians, will be considered in future as evidence of a hostile intention on the part of the tribe.
[6][7][8] It has been speculated that Qualchan may have been unaware that his father had been taken prisoner and instead had been sent by Kamiakin to determine from Wright the treatment the Yakama would receive if they surrendered.