Cousins In Genealogy

This is where you can find all our genealogy articles about cousin relationships.

Start with the diagrams, clear explanations, and frequently asked questions in these articles:

Marriage Between First Cousins

American states have confusing different laws governing marriage between first cousins (and some other cousin relationships).

We have a color-coded map in our overview of first cousin marriage in the United States.

We’ve also got detailed articles for each state: