Erasmus Darwin Hudson died in 1880.
Erasmus Darwin Hudson was born in 1805.
Erasmus Alvey Darwin died in 1881.
Erasmus Darwin died on 1802-04-18.
Erasmus Darwin Barlow died in 2005.
William Erasmus Darwin died in 1914.
Erasmus Darwin died 18th April 1802!
I only know of Erasmus Darwin (not Erasmus Alvey Darwin)
Erasmus Alvey Darwin was born in 1804.
Erasmus Darwin Barlow was born in 1915.
The Life of Erasmus Darwin was created in 1879.
William Erasmus Darwin was born in 1839.
Erasmus Darwin was Charles Darwin's grandfather. See http://en.wikipedia.org/wiki/Erasmus_Darwin