Is it true there is a 1956 series called the White Falcon, that is about Anne Boleyn?

Yes, that is true. It was made by the BBC, a British TV channel, for their "Sunday Night Theatre" and was a TV play rather than a series. I haven't seen it so can't comment, but you can read about it at http://www.screenonline.org.uk/tv/id/1218638/