Published on the 500th anniversary of Christopher Columbus’ discovery of America, Good Faith and Truthful Ignorance uncovers from history the strange story of another, lesser-known Spanish explorer, Francisco Noguerol de Ulloa. In 1556, accompanied by his second wife, Francisco returned to his home in Spain after a profitable, 20-year sojourn in Peru. However, unlike other rich conquistadores who returned to their land of birth, Francisco was not allowed to settle into a life of leisure. Instead, he was charged with bigamy and the illegal shipment of silver, and was consequently arrested and imprisoned. Francisco’s first wife (thought long dead) had filed suit in Spain against her renegade husband. So begins the legal tale of an explorer and his two wives, reconstructed through the authors’ original archival research. Drawing on the records from the trial, the narrative of Francisco’s adventures provides a window into daily life in 16th-century Spain, as well as the experience of conquest and settlement of the New World. Told from the point of view of the conquerors, Francisco’s story reveals not only the lives of the middle class and minor nobility, but also much about those at the lower rungs of the social order.