I am looking for a fantasy book in a series of books about young people of Celtic descent who live in the southern American states who encounter and fight beings of Celtic mythology. They travel on a boat which resembles a metallic dragon which shrinks to be carried. One of the young people is an Native American Indian who gets help from beings of the Native American Indian mythology. The books, I think, were published in the 1980s.
This is a series by Tom Dietz, beginning with Windmaster’s Bane. Great series!
Look at the books by Tom Deitz.