Eli Terry, born April 13, 1772, moved to Plymouth in 1793 and helped develop the production of wooden movement clocks. His manufacturing techniques made clocks affordable to American households, and he is considered the father of manufacturing in the United States. He was inducted into the National Inventors Hall of Fame in 2007 for his technological advances in manufacturing, and he died in Terryville on February 24, 1852. Silas Hoadley, born January 31, 1786, manufactured clocks with Eli Terry and Seth Thomas, then continued making mantel clocks and tall clocks in Greystone until about 1849. This section of Plymouth was known as Hoadleyville before later being named Greystone. Hoadley was active in Plymouth civic life, serving three terms in the State Assembly and one term in the State Senate in 1844, and he died in Plymouth on December 28, 1870. Greystone, also called Ireland and then Hoadleyville, was an early busy community where trains regularly stopped at Greystone Station. Hancock Brook supplied waterpower for early industry, with waterwheels and later turbines running factory machinery. The area's industrial timeline included a sawmill operated by Amos and Abraham Hickox in 1700, a gristmill run by Calvin Hoadley in 1750, a clock factory established by Eli Terry, Seth Thomas, and Silas Hoadley in 1806, Thomas and Hoadley as mechanics in company in 1810, the Silas Hoadley Clock Factory in 1814, and the Hancock Valley Manufacturing Co. in 1850.