The Isle of Battle Book two of the swans war

"Fleeing a forced marriage, Elise Wills makes a desperate bargain with a dark river spirit, while wanderer Alaan, searching for Elise with a band of companions, seeks to elude the dark knight Hafydd who hunts him for his secrets."
"Treachery and deceit run rampant throughout a devastated land, spawning dark alliances in the terrible war ignited by the enmity of two families. But unbeknownst to all, there are others who truly control the beleaguered kingdom's destiny'combatants emerging from eons of restless sleep to renew the bloody terror of a battle older than time."@en
"Treachery and deceit run rampant throughout a devasted land, spawning dark alliances in a terrible war."@en
""Treachery and deceit run rampant throughout a devastated land, spawning dark alliances in the terrible war ignited by the enmity of two families. But unbeknownst to all, there are others who truly control the beleaguered kingdom's destiny -- combatants emerging from eons of restless sleep to renew the bloody terror of a battle older than time." -- from the publisher."@en