Weird email of the day

Are you the daughter of the Mistress who died???

That's it, no salutation, no signature, no other text. Bizarre. I think I know what late and much-lamented Mistress he means, but I have no earthly idea why he thinks I'm her daughter. She's been gone for, oh, about a year now, I believe. Obviously he hasn't done a search here about my parentage...

Strange.