1969: The formal investiture of Prince Charles as Prince of Wales took place in a televised ceremony in Caernarfon Castle. The coronet used in the ceremony was created for the occasion; its crosses and fleur-de-lys were made from a nugget of Welsh gold.
1097: Crusaders defeated the Seljuk Turks at the battle of Dorylaeum.
1858: Papers from Charles Darwin and Alfred Russel Wallace, outlining for the first time the theory of evolution by natural selection, were read at a meeting of the Linnean Society of London.
Compiled by Julian Humphrys – You can follow Julian on Twitter @GeneralJules