Beloved Exile By Parke Godwiin

This is the second novel in the Arthurian trilogy by Park Godwin. It tells the story of Guenevere after the death of Arthur. She tries to rule as Empress but is captured in war and ends up as a slave in a Saxon household. She learns about the Saxons and their more democratic farming based culture, and learns to appreciate their good qualities. Later, she is rescued and goes to the Eastern Empire in Constantinople, returning to Britian in old age.