Ward Churchill traces part of his American Indian lineage to Joshua Tyner, a Revolutionary War veteran from Georgia. But Tyner listed himself on the 1820 census as "white," and historical documents report that his mother was killed and scalped by Creek Indians. Meanwhile, genealogy records researched by the Rocky Mountain News show that even if Joshua Tyner had been a full-blooded Indian, he would have provided Churchill with only one-sixty-fourth Indian blood. Nevertheless, the fiery Churchill - who maintains that he is at least one-sixteenth Cherokee - has fashioned a controversial career of activism and education over injustices to America's...