"Hamilton Memoirs" (as noted several times here on geni.com) was actually called, "Historical and genealogical memoirs of the House of Hamilton; with genealogical memoirs of the several branches of the family", supposedly written by Anderson, John, Surgeon. Anderson was appointed by the Marquis of Douglas (later, Duke of Hamilton) (William Douglas-Hamilton, 1st Earl of Selkirk) to be the first surgeon to the Lanarkshire Militia. (One would wonder when John A Surgeon had time to write such a text, and, on genealogy.)
Agnes Maxwell
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John Anderson (genealogist, 1789–1832).
John Anderson (6 June 1789 – 24 December 1832) was a Scottish surgeon and genealogist, of Hamilton, Lanarkshire.
"He was born on 6 June 1789, at Gilmerton House, Midlothian, and became a licentiate of the Royal College of Surgeons of Edinburgh, and while passing the college examinations was appointed by the Duke of Hamilton (then Marquis of Douglas) first surgeon to the Lanarkshire Militia, and afterwards his own medical adviser, positions which he held to the time of his death. He was very unassuming, of social disposition, and noted for his benevolence. He died 24 December 1832 (at the age of 43) of inflammation of the brain. His large work, 'Historical and Genealogical Memoirs of the House of Hamilton,’ in quarto, was published at Edinburgh in 1825; a supplement was issued in 1827. For twenty-nine years before his death (Started at the age of 15?) Anderson was engaged upon a 'Statistical History of Lanarkshire,’ and also upon a 'Genealogical History of the Robertsons of Struan,’ but neither of these works appears to have been printed."
https://en.wikipedia.org/wiki/John_Anderson_%28genealogist%2C_1789%....
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(Another Wikipedia story about John Anderson (genealogist)
John Anderson (genealogist, 1798–1839)
"John Anderson WS (16 August 1798 – 21 September 1839) was a Scottish genealogist, Writer to the Signet, and secretary to the Scottish Society of Antiquaries, an institute founded at Inverness in March 1825. He wrote a 'History of the Family of Frisel or Fraser, particularly Fraser of Lovat, embracing various notices illustrative of National Customs and Manners, with original correspondence of Simon Lord Lovat, 1825,’ 4to, pp. 208. He also wrote the prize essay on the 'State of Science and Knowledge in the Highlands of Scotland … at the period of the Rebellion in 1745, and of their progress up to the establishment of the Northern Institute for the Promotion of Science and Literature in 1825,’ which was published in 1827, and obtained the gold medal offered to competitors by Sir George Stewart Mackenzie.
He resided at 4 Walker Street, near the east end of Coates Crescent, Edinburgh, in 1825, but the dates of his birth and death are not on record. He is presumably the same "John Anderson WS" who is listed as living at 18 Moray Place in 1835."
https://en.wikipedia.org/wiki/John_Anderson_(genealogist,_1798%E2%8...
(Certainly being "A Surgeon" helped with his credibility.)
https://archive.org/details/historicalgeneal00ande/page/n8/mode/1up