The Bloody Quarrel — Duncan Lay

The prince is dead.
Fooled by the treacherous King Aidan, Fallon has shot down the one man he trusted to save his beloved nation of Gaelland. And yet, when the King could grind Fallon underfoot, he draws the simple farmer and fighter closer, making a hero of him.
Embroiled in plots beyond his comprehension and weighted with the guilt of the prince's murder, Fallon must tread carefully if he is to accomplish the task that first brought him to the cursed capital: rescue his wife, Bridgit, and the rest of his village from Kottermani slavery. If he and his hopelessly ensnared men can survive, they may yet find redemption.
Meanwhile, across the ocean, Bridgit is rallying those around her to spring an escape. But who can be trusted? The ever-present danger of traitors and liars among the slaves, and even among her fellow Gaelish, is poison to her plans.
With an ocean between them and fouler nightmares looming, Fallon and Bridgit will be driven to their very limits to escape their prisons, find each other, and bring justice to Gaelland.
This epic fantasy is perfect for fans of Robin Hobb and Joe Abercrombie.