This stone is at Nevill Holt Opera, near Market Harborough, and the sentence is right at the end of this link. this link
Nevill Holt Opera’s 2020 season runs from 10 June to 1 July. For full details and tickets visit the Nevill Holt Opera website.
The connection with Richard is an extra attraction!
Of course, this post was written before Covid 19 descended upon us all, but I’m sure the Opera will return!