Alexander Bruce, 2nd Earl of Kincardine

Alexander Bruce, 2nd Earl of Kincardine FRS (1629–1681) was a Scottish inventor, politician, judge and freemason, who collaborated with Christiaan Huygens in developing a marine pendulum clock.

[1] His grandfather, Sir George Bruce had built up a fortune in coal-mining and salt-production, building Culross Palace in Fife in 1597.

During the English Civil War he served as a captain with the Royalist cavalry, fighting at the Battle of Worcester.

Bruce was one those making up the 1660 committee of 12 that led to formation of the Royal Society of London, and he conducted extensive correspondence with fellow freemason Sir Robert Moray.

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