Thomas Newcomen was a British inventor who created the first practical steam engine in 1712, the Newcomen steam engine. He was an ironmonger by trade and a Baptist lay preacher by calling. He was born in Dartmouth, Devon, England, to a merchant family and baptised at St. Saviour's Church on 24 February 1664. In those days flooding in coal and tin mines was a major problem, and Newcomen was soon engaged in trying to improve ways to pump out the water from such mines. His ironmonger's business specialised in designing, manufacturing and selling tools for the mining industry.

https://en.wikipedia.org/wiki/Thomas_Newcomen