I've got this one ... and I know I planted it myself from a random plant sale a couple of years ago.
It was labeled as "peruvian love apple" by the grower ... but I suspect that was a name they made up!
It's an ornamental non-edible relative of physalis, tomatillo and cape gooseberry, the dried stems with chinese lanterns on them are nicely decorative when dried.
I can't seem to stop it coming back no matter how I dispose of the plants though ... it certainly grows very well!