 The site of the final encounter between the Union and Confederate States armies before they fought against each other in the Battle of Gettysburg during the American Civil War, this borough has since become known as the "Snack Food Capital of the World" due to the establishment of multiple food manufacturing businesses there during the 20th century.In 1727, John Digges, an Irish nobleman of Prince George's County, Maryland, obtained a grant of of land where Hanover is now located from Charles Calvert, the fourth Lord Baltimore.The area was called Digges Choice, and in 1730, a group of Catholics started the settlement that became known as the Conewego Settlement.