@Stahesh @VooDooMedic

Next follow the words between qualified persons; for persons excluded by law cannot contract marriage, and if they do their marriage is invalid. Persons, for instance, within the fourth degree of kindred, a boy before his fourteenth year, and a female before her twelfth, the ages established by law, cannot contract marriage.

http://catholicapologetics.info/thechurch/catechism/Holy7Sacraments-Matrimony.shtml

The Catechism of the council of Trent originally set the minimum age of marriage at 12 for women & they changed it later