(1) Those contracted by any party below eighteen years of age even with the consent of parents or guardians;
(2) Those solemnized by any person not legally authorized to perform marriages unless such marriages were contracted with either or both parties believing in good faith that the solemnizing officer had the legal authority to do so;
(3) Those solemnized without license, except those covered the preceding Chapter;
(4) Those bigamous or polygamous marriages not failing under Article 41;
(5) Those contracted through mistake of one contracting party as to the identity of the other; and
(6) Those subsequent marriages that are void under Article 53
Can anyone help elaborate on (5)