Book 1

Roma Mater

by Poul Anderson and Karen Anderson

Published 1 December 1986

Book 2

Gallicenae

by Poul Anderson and Karen Anderson

Published 3 November 1988

Book 3

Dahut

by Poul Anderson and Karen Anderson

Published 2 January 1988

Book 4

The Dog and the Wolf

by Poul Anderson

Published 1 April 1988
After the fall of Ys, Gratillonius, once the King, must try to save his remaining people from the advance of the barbarians.