1)Pub names: yes, I also get annoyed when long established local names disappear when ownership changes. At least one local to me has gone back from being one of the chain Slug & Lettuce pubs to the original Winkfield (village name).[another near us has a sign "Duke of Edinburgh famous for fresh fish" which always makes me smile- I can just picture him with his barrow!]
2)Black swans were popular imports to stately home and other lakes and seem to breed quite happily in this country. Norfolk ones might have originated at RSPB Minsmere or a country house estate.
RtS (but I could be wrong....)