U.S. state, river, and native tribe, all named for the bay, which was named for Baron (commonly "Lord") De la Warr (Thomas West, 1577-1618), first English colonial governor of Virginia. The family name is attested from 1201, from Delaware in Brasted, Kent, which is probably ultimately from de la werre "of the war" (a warrior), from Old French werre/guerre "war" (see war (n.)). Related: Delawarean.
also nonny-nonny, 1530s, an unmeaning refrain word in older English ballads, similar to the fa la of madrigals, often used "as a cover for indelicate allusions" [Century Dictionary].
French colony, from 1812 a U.S. state, named 1682 by French explorer la Salle for Louis XIV of France. The name originally applied to the entire Mississippi basin. Related: Louisianian. The Louisiana Purchase, accomplished in 1803, was so called by 1806.