Father John Goodyear 1456

I would contact the Confraternity of St James. Many people over the years have written papers on pilgrims to Santiago in the middleages. Professor Brian Tate wrote a paper for the 1991 conference titled "Pilgrimage to St James of Compostella from the British Isles during the late middle ages". They have a close working relationship with the Cathedral in Santiago.
There is no mention of Father John Goodyear in Constance Mary Storr's excellent book 'Jacobean Pilgrims from England to St James of Compostella from the early twelfth to late fifteenth century".
1456 was a Holy Year and she lists the names of 17 ships and their license holders who carried pilgrims from England to Spain that year.
Chapter 5 is "English Pilgrims of St James" and she does mention 1456 but mostly William Wey's journey.
Good luck with your research.

I found this reference to the altar piece.
http://1001footsteps.com/caminos/ingles.html

And this 1926 reference: http://nq.oxfordjournals.org/content/CL ... matter.pdf