William H. Warner
... that in 1849, Captain William H. Warner led a survey party into the upper Pit River area of northeastern California, but was killed in an ambush just south of the Oregon border?
... that in 1849, <a href="./Captain_(United_States_O-3)" id="mwB6s" rel="mw:WikiLink" title="Captain (United States O-3)">Captain</a> <b id="mwB6w"><a href="./William_H._Warner" id="mwB60" rel="mw:WikiLink" title="William H. Warner">William H. Warner</a></b> led a survey party into the upper <a href="./Pit_River" id="mwB64" rel="mw:WikiLink" title="Pit River">Pit River</a> area of northeastern <a href="./California" id="mwB68" rel="mw:WikiLink" title="California">California</a>, but was killed in an ambush just south of the <a href="./Oregon" id="mwB7A" rel="mw:WikiLink" title="Oregon">Oregon</a> border?