A farm in Stafford County on the Rappahannoc, where his father had lived for several years before his death, was his share of the paternal estate, and on this he lived with his mother, till he had completed his sixteenth year. He desired to enter the British Navy, as a path to honorable distinction, and one of his half brothers, many years older than himself, had succeeded in obtaining a warrant for him; but the mother's reluctance to part with her eldest boy induced him to relinquish this advantage, and to embrace instead the laborious and trying life of a surveyor, in those rude, early days of Virginia exposed to extraordinary hazards. Upon this he entered immediately, accepting employment offered him by Lord Fairfax, who had come from England to ascertain the value of an immense tract of land which he had inherited, lying between the Potomac and Rappahannoc rivers, and extending beyond the Alleghanies. The surveying party was accompanied by William Fairfax, a distant relative of his lordship, but the boy of sixteen was evidently the most important member of the party. When the hardships of this undertaking became too exhausting, he returned to the more settled regions, and employed himself in laying out private tracts and farms, but he spent the greater part of three years in the wilderness, learning the value of lands, becoming acquainted with the habits and character of the wild Indian tribes, then so troublesome in the forests, and fitting himself by labor, study, the endurance of personal hardships and the exercise of vigilance and systematic effort, for the arduous path before him.