Erasmus Darwin was Charles Darwin's grandfather. See http://en.wikipedia.org/wiki/Erasmus_Darwin
He presented a theory of evolution.
Charles Darwin had 10 children.William Erasmus Darwin (b. 1839)Anne Elizabeth Darwin (b. 1841)Mary Eleanor Darwin (b. 1842)Henrietta Emma Darwin (b. 1843)George Howard Darwin (b. 1845)Elizabeth Darwin (b. 1847)Francis Darwin (b. 1848)Leonard Darwin (b. 1850)Horace Darwin (b. 1851)Charles Waring Darwin (b. 1856)
Erasmus Alvey Darwin nicknamed Eras or Ras. He was the older brother of Charles Darwin. He was born five years earlier, and also brought up at the family home.
William Erasmus Darwin Ann Elizabeth Darwin Mary Elenor Darwin Henrietta Emma Darwin Geoge Howard Darwin Elizabth Bessy Darwin Francis Darwin Leonard Darwin
Erasmus Darwin Barlow was born in 1915.
William Erasmus Darwin died in 1914.
Erasmus Alvey Darwin died in 1881.
Erasmus Darwin died on 1802-04-18.
Erasmus Darwin Hudson died in 1880.
Erasmus Darwin died 18th April 1802!
I only know of Erasmus Darwin (not Erasmus Alvey Darwin)
William Erasmus Darwin was born in 1839.
Erasmus Alvey Darwin was born in 1804.
Erasmus Darwin Hudson was born in 1805.
The Life of Erasmus Darwin was created in 1879.
Erasmus Darwin was Charles Darwin's grandfather. See http://en.wikipedia.org/wiki/Erasmus_Darwin