Henry VIII's rule in a nutshell:

That awkward moment when his mistress who was his second wife’s sister gives him a son but it’s a bastard son and Anne Boleyn finally was willing to marry him. So the bastard son was pushed aside.
In fact it was purely due to the son that Anne Boylen’s sister was not beheaded as well with her sister and brother.
And his 3rd wife gave him a son but it was sickly so he pushed harder for a son.