Ramsey created a handy chart in 1987. Though it's a few decades old now, the information is timeless. I hope you'll find it useful, too, especially if you have a family reunion coming up.

The Real Housewives of Potomac Season 9 reunion was filmed on Thursday, Jan. 9 in New York City — and if you can't wait for it to air, we here at BravoTV.com have a special preview of the ...