Sacred Blood of Prythain — David Baker

It is 429 AD and the Roman Empire is falling apart. When Germanus of Gaul is summoned to Rome to have an audience with the Pontifex Maximus, the Pope pleads with him to travel to Britannia, become Archbishop, and overthrow the Vortigern, the evil mastermind who plans to conquer Rome and the Empire. When Germanus finally agrees, he has no idea what lies ahead.
After he arrives home, he is horrified to find his wife murdered and his son, Patricius, missing. When a mysterious red-haired Celtic queen arrives at the funeral celebrations, she entices Germanus to take her with him back to the island, along with Lupus, his adopted son. While in Britannia, Germanus becomes torn between the different factions that are battling to impose their beliefs and dominate both island and Empire. As he fights with Britons and Celts and against Saxons and the Vortigern's crack troops, he finds a new love and a long-lost lover, comes face-to-face with his mortality, and encounters human sacrifice. Now he must decide what kind of man he is: pagan or Christian; Roman or British; general or bishop; emperor or pope. How he decides will not only seal his fate, but also that of an entire continent.
In this exciting saga, a Roman general is led on an incredible journey through battles and human sacrifice to a personal choice with the power to transform history.