Books like The Last Dragonlord

Dragonlord Linden Rathan, last-born of a race of immortal weredragons, has spent six hundred years alone, searching for his soultwin while his fellow Dragonlords watch over humanity's Five Kingdoms.When the Queen of Cassori dies mysteriously, Linden and the other Dragonlords are called upon to prevent civil war as two human claimants vie for the regency.As the battle for Cassori rule escalates, Linden becomes the target of the Fellowship, a secret society of true-humans who could actually destroy his immortal life.Then he meets a beautiful young ship captain named Maurynna who may be the only one who can help Linden bring Cassori back from the brink of chaos.