Sanderson was born and brought up outside the British public-school system that he was to affect so profoundly. His early education was obtained in a parish school. His father was employed in the estate office of Lord Boyne at Brancepeth in Durham. There were several brothers but they all died before manhood, and the scanty¹ indications one can glean² of those early years suggest a slender, studious, and probably rather delicate youngster. He was never very proficient³ in any out-of-door games. In the early days at Oundle he careered about on a bicycle; in later years he played tennis; his vacation exercise was rock-scrambling. He became a 'student-teacher,' so the official Life phrases it, at a school at Tudhoe, but whether there was any difference between being a student-teacher at a school at Tudhoe and being an ordinary pupil-teacher in an ordinary elementary school under the English Education[Pg 10] Department I have been unable to ascertain⁴. He was already notable in his village world as exceptionally intelligent, industrious⁵, and ambitious, and with a little encouragement from the local vicar and one or two friends he effected an escape from the strangling limitations of elementary teaching.