Weathersfield is a town in Windsor County, Vermont, United States. The population was 2,825 at the 2010 census. The town of Weathersfield was named for Wethersfield, Connecticut, the home of some of its earliest settlers. The Connecticut town had taken its name, in turn, from Wethersfield, a village in the English county of Essex, the name of which derived from "wether", or in Old English wither, meaning a castrated lamb. In England, wethers were trained to lead flocks of ewes to pasture. It was a supreme irony that the name of the Vermont town (with an 'a' inserted) would derive from a connection to sheep, the animal that would come to define Weathersfield's earliest antecedents and first put it on the map.
The man responsible for that feat was a native of Boston who had become a European trader. William Jarvis was appointed by President Thomas Jefferson as U.S. Consul General to Portugal, after founding a trading house in Lisbon. In 1811 Jarvis imported from Spain to his farm at Weathersfield Bow the first Merino sheep brought to America. Jarvis set aside eight of the 4,000 Merino sheep he imported as gifts to former President Jefferson and to President James Madison. (Info from wikipedia)