He invented the first safety lamp about the same time as Sir Humphry Davy namely Davy lamp using different principles before the invention of electrical based lamp. Geordie lamp is safer than Davy lamp but somehow the original verdict for the invention went in favour of Davy but later overturned in favour of Stephenson.
Geordie lamp is used mainly used in the mines around Newcastle and North East area, whereas Davy lamp is being used all over UK. Interestingly based on the popularity of the Geordie safety lamp in Newcastle upon Tyne and the wider Tyneside region of North East England, its native-born are called Geordie [3].
[1]George Stephenson:
https://en.wikipedia.org/wiki/George_Stephenson
[2] Geordie lamp:
https://en.wikipedia.org/wiki/Geordie_lamp
[3]Geordie:
Suddenly the world changed. Before that, most people never got further than 50 miles from where they were born. That changed. The world became much smaller. It's the moment when the Industrial Revolution really got going, pulled along behind a steam engine.
https://en.wikipedia.org/wiki/Liverpool%E2%80%93Manchester_l...
https://en.wikipedia.org/wiki/Stockton_and_Darlington_Railwa...
So I’d argue that they were moving first!