Sir Francis Darwin FLS FRS FRSE[1] (16 August 1848 – 19 September 1925) was a British botanist.

First he married Amy Richenda Ruck in 1874, but she died in 1876 four days after the birth of their son Bernard Darwin, who was later to become a golf writer.

Her sister Adeline Fisher was the first wife of Darwin's double first cousin once removed Ralph Vaughan Williams.

He also received honorary doctorates from Dublin, Liverpool, Sheffield, Brussels, St Andrews, Upsala, and Prague.

His first wife, Amy Ruck, died in 1876, a few days after the birth of her son Bernard, and was buried in Holy Trinity Church, Corris, North Wales.

[10] According to a letter written by Charles Darwin to his close friend, Joseph Dalton Hooker: " I never saw anyone suffer so much as poor Frank.

She died in 1920 and is interred in the Parish of the Ascension Burial Ground, Cambridge, opposite the grave of Sir Francis Darwin and his daughter Frances Cornford.