The AB necklace is in a portrait thought to be of her, so I guess real?
There's no evidence Cromwell set up AB's suitors because of a play. I don't think even in the books/TV it's imply that's why he did it exactly - more that they were arrogant and thoughtlessly cruel, and those moments flashed back to him when he was at that stage? But not sure.
marie - I couldn't get into that either. Oddly, given WH is Cromwell, I found it too much 'man history'.