William Davies Evans
Chess Player
A Welsh inventor and skilled chess player who most notably invented the tri-coloured lighting on naval vessels, which helped ships avoid collisions at night.
He worked on sea vessels from a very young age.
He is remembered best for his unique strategies, including Evan's Gambit.
His family sent him to work as a sailor at the age of 14.
His methods are employed by some of the top chess stars today, including Magnus Carlsen.