"But, holie father, I am certifyed

That they youre power and policye deride;

And how of you they make an anagram,

The best and bitterest that the wits could frame.

As thus:

Supremus Pontifex Romanus.

Annagramma:

O non sum super petram fixus."

It occurs in Taylor's Suddaine Turne of Fortune's Wheele, lately printed for private circulation, under the care of Mr. Halliwell.

C. H.