CCC 1625
Christian Mystery›SECTION TWO THE SEVEN SACRAMENTS OF THE CHURCH›CHAPTER THREE THE SACRAMENTS AT THE SERVICE OF COMMUNION›III. Matrimonial Consent
The parties to a marriage covenant are a baptized man and woman, free to contract marriage, who freely express their consent; "to be free" means: - not being under constraint; - not impeded by any natural or ecclesiastical law.