The Norfolk flag is basically the coat of arms strectched into the flag.

The coat of arms is very popular in the county and is worn for example by Norfolk football Referees and Police officers.

Unfortunately I cannot find anything out about the history or the arms which is strange as Norfolk is proud of it's history and especially it's most famous son Lord Horatio Nelson.

David Bethall wrote in to say:

Browsing your site I noticed that you say you can't find any information on the origins of Norfolk's coat of arms.

The county map of Norfolk, produced as part of the Atlas Novus of 1648 and held at the National Library of Scotland, shows the arms to be those of one Richard Gaite, Earl of Norfolk.  Above the shield are added a lion passant guardant on a red field to represent the city of Norwich and two Prince of Wales feathers in recognition of a royal birth at Sandringham (Edward VII?).

The flag now has it's own facebook page