Bolton is one of the older Connecticut towns, dating it's incorporation in October of 1720.
Many of the settlers came from Bolton, Lancashire, England and that is how the town name came to be... probably named after Bolton, England.
Some historical facts are that in 1781, George Washington stayed at a home in Bolton. Later that year, the French army passed through the town.
Bolton was originally part of the hunting ground of the Podunk Indians who lived in what is now East Hartford and South Windsor.