"The peaceful Zuni of New Mexico and Arizona are much studied, partly because their language, culture and physical appearance set them apart from other Native American peoples.
Davis, an anthropologist who has made 10 visits to the Zuni pueblo, now offers the startling thesis that a group of Japanese Buddhists left earthquake-wracked medieval Japan and came by ship to the Southern California coast, eventually migrating inland to the Zuni territory, where they merged their culture and genes with Native Americans to produce the modern Zuni people around A.D. 1350.
Davis uses ""forensic"" evidence--including analyses of dental morphology, blood and skeletal remains--to support a Japanese-Zuni connection."
Yet those tribes claim to have come from a hole(Sipapu) in the ground in the Grand Canyon.