nigella'sguest I'm trying to work out how it would be more difficult to work out that your DH was secretly Ken B than your brother.
Surely if you lived with KB you'd know? What with the Hollywood bigwigs / Robbie Coltrane for supper most nights, shakespearian tomes cluttering the hallway and breeches in the laundry basket.
Although I guess you'd get some clues from your brother growing up if he were the bearded one (does he still have a beard?). Your parents might have dropped hints and your surname would probably be Brannagh.