John Dwight was one of the two founders of the company now known as Church & Dwight. The company was originally established in 1846 as John Dwight and Company. John Dwight and his brother-in-law, Dr. Austin Church, developed a way to manufacture sodium bicarbonate, also known as baking soda, which was the company's first product. This product later became famous under the brand name "Arm & Hammer."