Dane is a term that can refer to several different things.
1) In terms of geography, Dane is a county in Wisconsin, United States. It is named after James Duane Doty, an early settler and politician.
2) In literature, Dane is the name of a character from Shakespeare's play "Romeo and Juliet". He is one of Romeo's friends who helps him sneak into the Capulet family's party in Verona.
3) In Denmark, dane refers to people or things related to that country. For example, Danish pastry is a popular dessert originating from Denmark and often referred to as "Danes" by many countries around the world.