the Carson or Truckee routes. Rancher Lassen was granted in 1844 the Rancho Bosquejo Mexican land grant in Tehama County by Governor Manuel Micheltorena. On his fourth expedition to the west, John C. Fremont recorded in his journal that in the spring of 1846 he visited and stayed at the Lassen ranch. Fremont noted that Lassen had brought into cultivation wheat, grapes and cotton. In 1855 Lassen moved to the Honey Lake region, where he prospected and served in the office of surveyor of the unofficial Nataqua Territory. Death Lassen was murdered on April 26, 1859 in Clapper Canyon (then known as Black Rock Canyon) in the Black Rock Mountains as he was traveling in the area (later known as Hardin City, Nevada), to prospect for silver. He was traveling along with Edward Clapper and Americus Wyatt; Clapper was killed in the same incident, but Wyatt escaped. The circumstances surrounding his death remain mysterious. According to Wyatt, Lassen and Clapper were shot by an unseen sniper while breaking camp. At the time the culprits were widely considered to be Northern Paiute, who were then in a state of unrest, which would soon lead to the Paiute War. However, Wyatt himself, Pit River Indians, and disgruntled emigrants who followed the Lassen trail, have also been suspected. In particular, an investigation at the time disclosed that none of the supplies of Lassen, Clapper or Wyatt had been taken; in the perception of the investigator, leaving the supplies was not normal conduct for a Native American raiding party at that time, and, as a result, Wyatt himself has been suspected as the murderer of Lassen and Clapper. William Weatherlow, the Susanville resident, leader of the Honey Lake Rangers, and close friend of Isaac Roop was known to be in the area and was leading the prospecting party Lassen, Clapper, and Wyatt were in search of. Weatherlow was thought by local Indian Agent Major Dodge to have been the murderer under order from Isaac Roop for political gain as Lassen was a prominent and leading candidate for the provisional governorship of the forming Sierra Nevada Territory. Peter Lassen's grave is in Susanville in Lassen County, California, along the eastern foothills of the Sierra Nevada. Legacy Banner Lassen Medical Center and Lassen College in Susanville, Lassen National Forest, Lassen Peak, and Lassen Volcanic National Park are named in his honor. In addition there is a