Marriage between first cousins

Q: Can I get married to my first cousin?

A: No, you cannot. You are related to your cousin by four civil degrees, and thus any such marriage is prohibited by reason of public policy (Article 38 of the Family Code).

From you to your father or mother, that is one degree. From your father or mother, to your grandparents, that is another civiil degree. From your grandparents to your uncle or aunt, that is another degree. And from your uncle or aunt to your first cousin, is another degree, making a total of four degrees.