“Levites are the descendants of the Tribe of Levi, one of the twelve tribes. In addition to Levites, the Kohens (priests) are also descended from Levi. Both are integrated in Jewish and Samaritan communities, but keep a distinct status.”  https://en.wikipedia.org/wiki/Levite

Much more information can be found here: http://www.biblestudytools.com/dictionaries/bakers-evangelical-dictionary/levite.html