Chatham County, Georgia Chatham County, Georgia Chatham County is a county in the U.S. state of Georgia, and is located on the state's Atlantic coast. The county seat and largest city is Savannah. One of the original counties of Georgia, Chatham County was created February 5, 1777, and is named after William Pitt, 1st Earl of Chatham. The U.S. Census Bureau's 2017 population estimate for Chatham County was 290,501 residents, making Chatham the most populous Georgia county outside the Atlanta metropolitan area. The official 2010 Census counted 265,128 residents in Chatham County. Chatham is the core county of the Savannah metropolitan area. According
Earl of Northumberland Earl of Northumberland The title of Earl of Northumberland was created several times in the Peerage of England and of Great Britain, succeeding the title Earl of Northumbria. Its most famous holders were the House of Percy ("alias" Perci), who were the most powerful noble family in Northern England for much of the Middle Ages. The heirs of the Percys, via a female line, were ultimately made Duke of Northumberland in 1766. <section begin=Percy Family/> William de Percy, 1st Baron Percy, who came from the village of Percy in Normandy, was in the train of William I. After arriving in