One of the earliest claims comes from Charlie Nagreen, who in 1885 sold a meatball between two slices of bread at the Seymour Fair now sometimes called the Outagamie County Fair. The Seymour Community Historical Society of Seymour, Wisconsin, credits Nagreen, now known as "Hamburger Charlie", with the invention. Nagreen was fifteen when he was reportedly selling pork sandwiches at the 1885 Seymour Fair, made so customers could eat while walking. The Historical Society explains that Nagreen named the hamburger after the Hamburg steak with which local German immigrants were familiar.