Blue Sun Armada series by Scott Moon (Audiobook)

Duke Uron Marlboro, a legendary warrior, leads his noble house to victory in the Zezner War, only to be betrayed by his political allies. Facing a brewing civil war and the wrath of the king, the Duke’s only hope for survival is to flee his doomed planet.

He launches a high-stakes expedition to locate his people’s long-lost, mysterious homeworld—the "Blue Sun". This military space opera follows the Marlboro family as they navigate deadly political games, intense fleet engagements, and massive mech battles in a desperate race across the stars to save their house from extinction.