Thomas Cogan was born at
Rothwell, Northamptonshire on 8 February 1736, the half-brother of
Eliezer Cogan. For two or three years he was placed in the
dissenting academy at
Kibworth Beauchamp, run by
John Aikin, but was removed at the age of fourteen, and spent the next two years with his father. He was then sent to the
Mile End academy, where
John Conder was the divinity tutor, but was transferred at his own request to a similar institution at
Homerton. Doubts as to the truth of the doctrines of
Calvinism prevented him from joining the dissenting ministry. In 1759 he was in the Netherlands, where he found that the Rev. Benjamin Sowden, the English minister of the presbyterian church at
Rotterdam, supported by the English and Dutch governments with two pastors, required a substitute; Cogan applied for and obtained the place. He continued to seek for a pastorate over a dissenting congregation in England, and about 1762 he was selected as the minister of a chapel at
Southampton, where he soon publicly renounced Calvinism and adopted the doctrines of
Unitarianism. A quarrel with his congregation followed, and Cogan became the junior minister of the English church at
the Hague. He was introduced to Mr. Graen or Groen, originally a silversmith at Amsterdam, and afterwards a banker, and was wooed and won, as the story goes, by the banker's only daughter, a beauty and an heiress. It was a condition of the marriage that Cogan should enter the profession of medicine, and he accordingly matriculated at
Leyden University on 16 October 1765, and took his degree of M.D. in 1767. He practised for a few years at Amsterdam, Leyden, and Rotterdam. He returned to London and settled in
Paternoster Row, where he soon obtained a lucrative practice, especially in midwifery. By 1780 he was once more in the Netherlands, having resigned his connection to Dr. John Sims, for many years the leading
accoucheur in London, and retired to follow his studies in moral philosophy. They rented the mansion of
Zuylestein, where they dwelt until the invasion by the French republicans in 1795. After a time at
Colchester they settled at
Bath, Somerset. Cogan rented a farm at
South Wraxall, near
Bradford-on-Avon and studied agriculture; when he left Bath he took farms at Clapton and at Woodford, and at the time of his death he was the tenant of a farm near Southampton. Mrs. Cogan died at Bath in 1810 and was buried at
Widcombe; Cogan later moved to London. The last years of his life were mainly passed in his lodgings in London or at his brother's house at
Higham Hill. He died there on 2 February 1818. On 9 February he was buried at
Hackney. ==Royal Humane Society==