Dayton was first known simply as The Cross Roads, where James Whitlock built a tavern on Georges Road around 1750. Early enterprises included a brick manufacturer and large nursery. In 1866, the name was changed from Cross Roads to Dayton, in honor of William L. Dayton, an attorney for the Freehold and Jamesburg Agricultural Railroad. Dayton had helped settle disputes arising from the location of a railroad right-of-way. He was later a United States Senator, was the first Republican nominee for Vice President (in 1856), and Minister to France.