It's actually Bishy Barnabee and there is a road in Bowthorpe near Norwich called Bishy Barnabee Way . It is supposed to refer to the Bishop Edmund Bonner or bloody Bonner as he was named for his persecution of heretics during the reign of Mary ! . Probably a derivative of the name Bishop Bonners Bees (whatever they were ) . There is a cottage museum about him in Dereham .
The best book on Norfolk dialect is by Peter Trudgill, in the Norfolk Origins series published by Poppyland Publishing.
http://www.poppyland.co.uk/