What is a crown associated with in A Midsummer Night's Dream?

There are three uses of the Word "crown" in the play.

1. In Act I Scene 2, Bottom talks about wearing a "French Crown coloured beard", a crown being a gold coin. This is the basis of one of Shakespeare's favourite jokes, since "French Crown" also meant the bald head which resulted from the "French disease", syphilis. Curious that Shakespeare, who was himself prematurely bald, should like this bald joke so much.
2. In Act II Scene 1 both Bottom and Titania talk about crowns of flowers. Although neither of them is talking about a wedding, it was customary to crown the bride with flowers on her wedding day. That is an appropriate image in this play which is circumscribed by a wedding.
3. In Act III Scene 2, Helena refers to the heraldic device of a crown used as the crest of a coat-of-arms. She uses this as part of her argument that her interests and Hermia's ought to be considered to be the same--their sameness is the same as two different iterations of the same coat of arms.