Thomas Thomson

[close] Thomas Thomson FRSE FSA Scot (1768 – 1852) was a Scottish advocate, antiquarian and archivist who served as Principal Clerk of Session (1828 - 1852) and as secretary of the literary section of the Royal Society of Edinburgh (1812-20).

Thomson was the eldest son of Rev Thomas Thomson, minister of Dailly in Ayrshire, and his second wife, Mary, daughter of Francis Hay. John Thomson was a younger brother. After attending the parish school of Dailly, he entered the University of Glasgow at age 13, where he graduated with an MA on 27 April 1789. He attended classes in theology and law at the University of Edinburgh from 1789 to 1791. He passed the Scottish bar as an advocate on 10 December 1793.

Thomson acquired a practice at the bar, particularly in cases demanding legal learning. Legal and historical antiquities later absorbed his attention. His main role was deputy clerk-register of Scotland, a new post to which he was appointed on 30 June 1806. His work mainly consisted of reforming the system of public registries and the method of the custody of records, in rendering these records accessible to research, in rescuing and repairing old records, and in editing the acts of the Scottish parliament and other governmental records under the authority of the Record Commission.

In 1807 he was elected a Fellow of the Royal Society of Edinburgh. His proposers were John Playfair, Sir James Hall and Thomas Allan. He served as Secretary to the Society from 1812 to 1820.

In February 1828 Thomson was chosen one of the principal clerks of the court of session. On the institution of the Bannatyne Club in 1823 he had been chosen vice-president, and on the death of Scott in 1832 he succeeded as president. Thomson, however, was lax on finance. After an inquiry into the accounts of the register office in 1839 he was removed from the office of deputy clerk-register.