The novels and short stories are based upon traditional Celtic legends and mythology, woven into a technologically advanced universe, and updated for a futuristic culture.
Earth has finally discovered its faraway and long-sundered kinfolk, but any possible alliance/treaty with the Terran Federacy could result in war with Keltia’s fiercest rivals, the Phalanx and the Cabiri Empire.
(Patricia Kennealy; hc 1986; pb 1987) The Silver Branch, the prequel to The Copper Crown, begins with Aeron’s father, King Fionnbarr, whose accidental love-affair affects both Keltia and Fomor, and continues with Aeron as she grows up: her education as a Fian (warrior) and a Ban-draoi (female druid); the personal and political challenges she must face before the arrival of the Terrans in Keltia; how she came by her great skills as warrior and sorceress; her strong friendship with Morwen Douglas, along with her love affairs with both Roderick Douglas (Morwen's elder brother) and Gwydion, Prince of Gwynedd; and why a mostly one-sided love/hate relationship with Arianiera (Gwydion's twin sister) ultimately causes Keltia's downfall.
In The Hawk’s Gray Feather Taliesin recounts his youth on the planet Gwynedd, and the beginnings of his lifelong friendship with Arthur of Arvon, destined to be the greatest king in both Keltic (and later Earth) history (at least until his descendant Aeron comes along 1500 years later).
(Published as Patricia Kennealy-Morrison; hc 1994; pb 1995) The Hedge of Mist concludes the Arthurian trilogy with a unique Grail quest and an epic battle to reclaim the soul of Keltia.
Marguessan, Arthur’s evil sister, attempts to seize the Throne of Scone, while Morgan Magistra, her twin, wife of Taliesin and the mightiest sorceress Keltia will ever see, struggles to restore the balance of Darkness and Light.
(Patricia Kennealy-Morrison; hc 1996; pb 1997) Blackmantle is the story of Athyn Cahanagh, who, by prowess in battle and the acclamation of the people, rose from humble origins to be High Queen of Keltia.
(Patricia Kennealy-Morrison; hc 1998; pb 1999) Their new home is found largely in part by the magic of Brendan's mother, Nia the Golden, princess of the Sidhe.
Taking place in the year 1307, this story recounts a fictional rescue and disappearance of the Templar fleet, long a tantalizing and mysterious conundrum, by a Keltic starship that happens to be in the neighborhood.
Crucible: Terran lieutenant and explorer Sarah O'Reilly arrives in Keltia with the Earth ship Sword, just prior to the action of The Copper Crown.