Wedding photography scam??

I'm thoroughly bewildered by some emails I've been getting and I'm curious
if anyone else here has seen something similar.

I am not a wedding photographer, have never shot a wedding, and do not
advertise myself as a wedding photographer. Nonetheless, I occasionally get
an email from someone who addresses me in a very familiar manner, either
telling me that I've shot a wedding for their son/daughter/sister/brother or
whatever and they'd like me to shoot theirs, or they say that they're happy
that I've agreed to shoot their wedding upcoming on such and such a date.

Keep in mind I've not recognized any of the names of any of these people
who've contacted me and I've certainly never booked or agreed to shoot a
wedding.

I'm utterly stumped as to what this could be about and my curiosity is
driving me crazy. I just got another one today.

My cynical side tells me it's got to be someone trying to scam me somehow,
but I can't conceive of how.

Has anyone had a similar experience, and if so, do you know what is going on
here? I'm at a complete loss but would love to know what's behind it.

Todd Adams