In that splendid book "No Bed for Bacon" by Caryl Brahms and SJ Simon there is a lovely running joke of Shakespeare constantly trying out different ways of spelling his name, and never able to satisfy himself as to which is best.

Incidentally, "No Bed for Bacon" was significantly drawn on by Tom Stoppard in the screenplay for Shakespeare in Love - I don't think he ever acknowledged that, but I could be wrong. Anyway it is well worth getting hold of and reading. Great fun.