(John George), a learned German antiquarian, was born at Thourneau in 1689. After studying at the university of Halle, he was appointed preceptor to Charles Maximilian and Christian Charles, the young counts of Giech Buchau; with whom he travelled through the chief cities of Germany, France, and the Netherlands, gaining great reputation among the learned as he went along, by illustrating several monuments of antiquity, particularly some fragments of Celtic idols lately discovered in the cathedral of Paris. Having acquitted himself of this charge with great honour, he procured in 1716 the education of two grandsons of Baron Bernstorff first minister of state to his Britannic majesty as elector of Brunswick Lüneburg. However, obtaining leave in 1718 to visit England, he was elected a fellow of the Royal Society for a learned essay De Dea Nekelennia numine verum Walachorum topico; he gave also an explanation of the ancient monument on Salisbury plain called Stonehenge, with A Dissertation on the Consecrated Milettoe of the Druids. Which detached essays, with others of the same kind, he published on his return to Hanover, under the title of Antiquitates celebres Septentrionales et Celticae, &c. He afterwards made the grand tour with the young barons, and to this tour we owe the publication of his travels; which were translated into English, and published in 1756, in 4 vols 4to. Mr Keyser on his return spent the remainder of his life under the patronage of his noble pupils, who committed their fine library and museum to his care, with a handsome income. He died in 1743.