Actor Adrian Grenier calls himself "Native American white boy," leans he's 8% Native by DNA, on Finding Your Roots.
If he had only one Native ancestor 11 or 12 generations ago, he'd be less than 1% Native. There must be more to the story than the show revealed. Many of his Latino ancestors may have been a European/Native mix at some point.
Another curiosity is that the show displayed only his Native percentage: 8.44. The rest of the DNA "pie" was blank. Did the show blank it out because it wanted to focus on the Native aspect? Or did Grenier ask for it to be blanked so the rest of his heritage would remain a mystery?
Oh, well. For more on identity issues, see Warren Should Apologize to Minorities and Comanche Filmmaker Criticizes Depp.