At a time when concepts of racial and ethnic identity increasingly define how we see ourselves and others, the ancestry of Melungeons--a Central Appalachian multiracial group believed to be of Native American, African and European origins--remains controversial. Who is Melungeon, how do we know and what does that mean? In a series of interviews with individuals who claim Melungeon heritage, the author finds common threads that point to shared history, appearance and values, and explores how we decide who we are and what kind of proof we need.