Grandpa's Secret Family

I'm sorry, but what the hell is going on in this commercial?  Why is this woman so charmed by the fact that she found multiple marriage certificates for her grandfather?  Did he have a bunch of secret families or was he just a cad who left a trail of heartbroken women in his wake?  Shouldn't this woman be concerned about secret relatives?  Maybe her husband is actually her cousin - who the hell knows!

Seriously, what is the deal with this commercial?