When about twelve years of age, young Martin was sent to the school of Dr. Henderson at Newry, where he first became acquainted with John Mitchel, then attending the same seminary as a day scholar. We next find John Martin an extern student of Trinity College, and a year after the death of his father he took out his degree in Arts. He was now twenty years old, and up to this time had suffered much from a constitutional affection, being subject from infancy to fits of spasmodic asthma. Strange to say, the disease which troubled him at frequently recurring intervals at home, seldom attacked him when away from Loughorne, and partly for the purpose of escaping it, he took up his residence in Dublin in 1833, and devoted himself to the study of medicine. He never meditated earning his living by the profession, but he longed for the opportunity of assuaging the sufferings of the afflicted poor. The air of the dissecting-room, however, was too much for Martin's delicate nervous organization; the kindly encouragement of his fellow-students failed to induce him to breathe its fetid atmosphere a second time, and he was forced to content himself with a theoretical knowledge of the profession. By diligent study and with the assistance of lectures, anatomical plates, &c., he managed to conquer the difficulty; and he had obtained nearly all the certificates necessary for taking out a medical degree, when he was recalled in 1835 to Loughorne, by the death of his uncle John, whose house and lands he inherited. During the four years following he lived at Loughorne, discharging the duties of a resident country gentleman as they are seldom performed in Ireland, and endearing himself to all classes, but particularly to the poor, by his gentle disposition, purity of mind, and benevolence of heart. In him the afflicted and the poverty-stricken ever found a sympathising friend, and if none of the rewards which the ruling faction were ready to shower on the Irishman of his position who looked to the Castle for inspiration, fell to his share, he enjoyed a recompense more precious in the prayers and the blessings of the poor. The steps of his door were crowded with the patients who flocked to him for advice, and for whom he prescribed gratuitously--not without some reluctance, however, arising from distrust of his own abilities and an unwillingness to interfere with the practice of the regular profession. But the diffidence with which he regarded his own efforts was not shared by the people of the district. Their faith in his professional skill was unbounded, and perhaps the confidence which they felt in his power, contributed in some measure to the success that attended his practice.