What an amazing visionary statement. From a conventional perspective, it makes little sense:
The bird of wonder dies-the maiden phoenix-
Her ashes new create another heir
What did audiences in 1613 make of the 'prophecy' that the late Queen Elizabeth - the "maiden Phoenix" - would have an heir?
Under the original title, "All is True", this is the play that famously burnt down the Globe Theatre.
During a performance of Henry VIII at the Globe Theatre in 1613, a cannon shot employed for special effects ignited the theatre's thatched roof (and the beams), burning the original Globe building to the ground.
https://en.wikipedia.org/wiki/Henry_VIII_(play)
But who was John Fletcher who supposedly wrote in collaboration with Shakespeare/Bacon?
https://en.wikipedia.org/wiki/John_Fletcher_(playwright)