The Delaware Indians (also known as the [[http://en.wikipedia.org/wiki/Lenape Lenape]]) lived along the Delaware river before being push out by European settlers.

They were the first tribe to sign a treaty with the new United States in 1778, and agreed to provide the United States with scouts.

Because of this Indian scouts working for the US Army where heavily associated with Delaware Indians. In fiction it is not uncommon to refer to a US Army Indian scout as "a Delaware."