Twilight Sojourn (en Inglés) - Marilyn Hailbronner

A fast-paced time travel adventure throws two unlikely people together in a passionate romance. A woman, running from an unhappy life, slips into the turbulent time of 1081 where she meets the seasoned commander of a Welsh war band in the aftermath of a battle that has tipped the balance of power in Wales. They navigate the wilds of the Welsh mountains trying to escape an unexpected enemy.

The first book in the Twilight Sojourn series will transport you to medieval Wales, a land torn apart by violence and a place where Mairwen, a woman from the future, discovers her one true love, the warlord named Rhain.She cannot keep Rhain from his mission, so she must make a choice. To love Rhain she must give up everything she once knew and join his fight for the freedom of Wales.