- 1826: The family moved to England when he was three years old. When aged 13 he moved to live with his brother John in London.
- 1839: Produces 'On the best method of conducting the Kington Mechanics' Institution', later published in 'History of Kington'.
- 1841: Moved to Neath, Glamorgan. Wallace started learning Welsh.
- 1843: During his period in Neath, Wallace first started taking a serious interest in natural history. He started studying botany, and he was appointed joint curator of the local museum.
- 1847: He published his first scientific paper in the 'Zoologist' – describing his discovery of a rare beetle in the Neath area.
- 1853: Published 'Palm Trees of the Amazon and Their Uses'.
- 1854–62: Went to the Far East to the Malay Archipelago and whilst there he formulated his theory of evolution.
- 1878: Wallace’s other significant contribution was his biogeographical work 'The Geographical Distribution of Animals'.
- 1880: Published 'Island Life'. He is sometimes referred to as the 'Father of Biogeography', and in tribute to him in this field it is still referred to as 'Wallace’s Line' in East Asia.
- Throughout his life Charles Darwin had great respect for Wallace’s abilities as a naturalist, and it was he who was mainly responsible for persuading the Government to award a small pension to Wallace.
- Wallace believed that Science should be taught through the medium of Welsh.
‘Wallace was a leading Victorian naturalist, with wide-ranging interests, from biogeography and evolutionary theory to spiritualism and politics.’ – Cyfieithwyd o ‘Alfred Russel Wallace’, Darwin Correspondence Project, University of Cambridge, https://www.darwinproject.ac.uk/alfred-russel-wallace