Spencer Campbell Thomson
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Spencer Campbell Thomson FRSE FFA (1842–1931) was a Scottish actuary and influential businessman. He introduced statistical mortality rates into life insurance.

Spencer Thomson was born on 16 October 1842, the son of William Thomas Thomson FRSE (1813-1883), manager of the Standard Life Assurance Company, and Christian Anne Seamen, 'above the office' at 3 George Street in central Edinburgh.[1][2] The family lived at Trinity Grove in north Edinburgh. He was educated at Edinburgh Academy until 1858 then completed his education at Rugby School before studying at Cambridge University[3] from 1861. His parents were then living at 41 Moray Place on the Moray Estate in Edinburgh's West End.[4]
In 1869 he married Georgina Maria Joanna Cockburn, daughter of George Ferguson Cockburn, commander of the British Army at Patna, granddaughter of Henry Cockburn, Lord Cockburn. They had at least five children. In the 1870s he lived at 10 Chester Street, a townhouse in Edinburgh's fashionable West end.[5]
Due to family connections he was President of the Cockburn Association in Edinburgh.
By 1910 he was living at 10 Eglinton Crescent, still in the West End,[6] and in 1919 he married a widow, Helen Gladys Walker (nee Montgomery), granddaughter of Sir William Stewart Walker of Bowland KCB.