There are 4 books in The Brothers of Gwynedd series.
The Brothers of Gwynedd series does not have a new book coming out soon. The latest book, Afterglow and Nightfall (Book 4), was published in January 1977.
The first book in The Brothers of Gwynedd series, Sunrise in the West, was published in January 1975.
The Brothers of Gwynedd series primarily falls into the General Fiction genre.