Another suggestion, albeit a longshot. Is it possible that someone has culled the information from your blog and/or V-Flyer, determined where you live (after all not many places have maypoles on the go during the last weekend in May as opposed to the first one) and got your address from the electoral register. I mean, let's face it - your surname is hardly as common as Smith or Jones.
The next question would be, To what end?
Start your conspiracy theories.....