Space Viking - H. Beam Piper

After his wife is murdered, a nobleman turns to vengeance, becoming a feared raider among the stars. His quest for justice evolves into a mission to rebuild civilization amid the chaos of a crumbling interstellar empire. Through warfare, loyalty, and discovery, he learns that honor can survive even in lawless space. The tale blends adventure and political intrigue, exploring the fragile balance between revenge and renewal.