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Martha Haskins, Lady Darwin (née du Puy; July 27, 1861 - 6 February 1947), known as Maud Darwin, was an American socialite and the wife of the English Cambridge University astronomer Sir George Darwin.

Sir George Howard Darwin (9 July 1845 – 7 December 1912) was an English barrister and astronomer, the second son and fifth child of Charles Darwin and Emma Darwin. He is known for the harmonic analysis of the theory of tides. The Darwin symbols for tides are named after him.