John Ebbets, a fur trader turned guide for California Gold Rush Forty-niners claimed to have led a string of pack mules easterly over the Sierras in the vicinity of Ebbetts Pass in April 1851. He believed the pass he had used would be suitable for the transcontinental railroad, as he noted little snow at the time. He later surveyed near the pass for a possible railroad route, but found it unsuitable. He intended to return to the pass itself to survey it for a road but was killed in the explosion of the steamboat Secretary on San Pablo Bay in 1854 before he could do so. While the pass was referred to by his name earlier, it was not until 1893, when the U.S. Geological Survey surveyed the Markleeville quadrangle, that the pass was officially named after him.