Keith, you did not support your assertion with a Wikipedia page,

Yes I did. I gave this quote from Yates' Wiki page,
""According to the Stanford Encyclopedia of Philosophy, "in 1600 there was no official Catholic position on the Copernican system, and it was certainly not a heresy. When [...] Bruno [...] was burned at the stake as a heretic, it had nothing to do with his writings in support of Copernican cosmology."[61] "

That was itself a quote from but one from a different online encyclopedia which none of us seem to have heard of, and which posts patent bollocks in it

Does it matter if you are familiar with the site?
The article was by a recognised expert on the subject. Why is that not enough?

Have you heard of The Warburg Institute, University of London, School of Advanced Study Dave?
http://warburg.sas.ac.uk/library/digital-collections/giordano-bruno/yates-brunos-mnemonics/