September 13, 1787, at his father’s house in Gateshead, England.
September 27, 1855.
John was the son of Lieutenant Cuthbert Adamson, Royal Navy, and his second wife Mary.
He was educated at Newcastle Grammar School, and in 1803 went to Lisbon, to work in the office of his elder brother Blythman, a merchant in the city. He left Portugal for England in 1807, when a French invasion threatened. While there, he had studied the Portuguese language and culture. His works include:
As a reward for Adamson’s services to Portuguese literature, the Queen of Portugal conferred the knighthoods of Christ and of the Tower and Sword on Adamson. He was a fellow of the Society of Antiquaries of London, and belonged to many English and continental philosophical and antiquarian bodies.