Good afternoon,
Could it be one of those things that didn't actually exist. As kids we used to told we were traveling by Shanksies pony, ie, walking. No pony involved.
It is recorded that the accommodation supplied to Rev Preedy in London at one stage had no furnishings. So could the "Rev Preedy's chair" be the floor where he slept also.
Mr Evans could simply have been sitting on the floor, "Rev Preedy's chair".
Of course this could be it but if it still exists it is probably at Barnsley FC. The team he founded when he worked in Yorkshire at his first church.
Writing to the vicar at Burpham is probably no good as you would need the Catholic church which is what I believe he was.
John915