I'm now confused whether he was testate or not!
I can see the difficulty. While admittedly there has to be some speculation in the one we've just done (because of the damage), there was definitely a will, because there is an executor and a renunciation:
lines 2-3 …
allegavit Johannes Penny esse executor = alleged John Penny to be the executor
lines 5-6 … certificavit quod prefatus Johannes Penny … quod noluit subire onus execucionis testamenti = confirmed that the aforesaid John Penny … that he was not willing to undertake the burden of execution of the will
line 10 … & expresse renunciavit onus = and expressly renounced the burden
So a different
John Walyson/Wallesson perhaps, albeit of Ruislip and with a wife named Ann or Agnes?
Are you certain of the years covered by the two registers?
Sorry I can't make other suggestions at the moment.