Patterson was a native of Tennessee, whence, in boyhood, he had gone with his parents to Texas and grown to manhood among the desperate and bloody men of that border State. His character, tastes, and pursuits were formed by early association with them. He was a gambler by profession, but of a nature too impulsive to depend upon it as a means of livelihood. When he came to California, he turned his attention to mining, alternating that pursuit with gambling, as the inclination seized him. Like Pinkham, he was a man of striking presence,—in stature six feet, and of weight to correspond, with a fair complexion, light hair streaked with gray, sandy whiskers, and, when unaffected by liquor or passion, a sad, reflective countenance lit up by calm but expressive blue eyes. His habitual manner was that of quiet, gentlemanly repose;—and to one unacquainted with his characteristics, he would never have been suspected of a fondness for any kind of excitement. In conversation he was uniformly affable when sober, and bore the reputation of being a very genial and mirth-loving companion when engaged with others in any exploring or dangerous enterprise. He was brave to a fault, and perfectly familiar with all the exposures and extremes of border life,—as ready to repair the lock of a gun or pistol as to use those weapons in attack or defence. His kindness and thoughtfulness for the comfort of any of his party in the event of sickness, and the resources with which he overcame obstacles in the numerous expeditions of one kind and another in which he participated, made him a great favorite with all who knew him, and gave him a commanding power over the society in which he moved. He was naturally a leader of those with whom he associated. Had these been his only characteristics, Patterson would have been one of the most useful men in the mining regions,—but whiskey always transformed him into a demon. Patterson was not a steady drinker, but gave himself up to occasional seasons of indulgence. He was one of that large class of drinkers who cannot indulge their appetites at all without going through all the stages of excitement, to complete exhaustion. From the moment he entered upon one of these excesses to its close, he was dangerous. The whole man was changed. His calm, blue eye looked like a heated furnace and was suggestive of a thirst for blood. His quiet and gentlemanly manner disappeared. His breath was labored, and his nostrils dilated like those of an enraged buffalo. He remembered, on these occasions, every person who had ever offended him, and sought the one nearest to him to engage him in quarrel. His whole bearing was aggressive and belligerent, and his best friends always avoided him until he became sober.