Alonso de la Vera Cruz, Speculum coniugiorum (third edition, Alcalá 1572)

The marriage treatise written in Mexico by the first holder of the prime chair of theology in the university there, and the earliest sustained attempt to work out what canon law should do about the marriages of people it had never contemplated. Its practical conclusion is procedural: with the natives of the new world, drop the notary, the sworn witnesses and the forms, because the forms cost more than the people have and the truth is reachable without them.