We don't have any history to allergies on either side. I got eczema as a kid - just a little here and there - and it seemed to be sugar that caused a flare up. Not anything I would call an allergy though.
I like the idea of baby led weaning - but he's not there with grabbing and putting in his mouth yet. I might try some other vege over the next few weeks and see how he goes. By then he might be at the stage where he can pick at what he wants.