Just stumbled across another finding. This time at St Giles Church near Torrington, that I visited last year. Appears that the slate epitaph hidden behind the church organ turns out to be that of Richard Copleston of Woodland who died in 1617.
The author James Grimwood-Taylor also believes that the 1586 tomb of another Richard Copleston is buried underneath the organ itself. An interesting read, and I’ll get in touch with James for more information.