Whether it is right to reckon error as an impediment to marriage?

Objections

Objection 1 : It would seem that error should not be reckoned in itself an impediment to marriage. For consent, which is the efficient cause of marriage, is hindered in the same way as the voluntary. Now the voluntary, according to the Philosopher (Ethic. iii, 1), may be hindered by ignorance. But ignorance is not the same as error, because ignorance excludes knowledge altogether, whereas error does not, since "error is to approve the false as though it were true," according to Augustine (De Trin. ix, 11). Therefore ignorance rather than error should have been reckoned here as an impediment to marriage.
Objection 2 : Further, that which of its very nature can be an impediment to marriage is in opposition to the good of marriage. But error is not a thing of this kind. Therefore error is not by its very nature an impediment to marriage.
Objection 3 : Further, just as consent is required for marriage, so is intention required for baptism. Now if one were to baptize John, thinking to baptize Peter, John would be baptized none the less. Therefore error does not annul matrimony.
Objection 4 : Further, there was true marriage between Lia and Jacob, and yet, in this case, there was error. Therefore error does not annul a marriage.