Hello! My parents were south in Rawcliffe, Yorkshire doing some family tree research and came across a headstone for John Gunn, and another for Charles and John Gunn. Knowing that Gunn is an almost exclusively Caithness rooted name, they took a picture of it in case it was useful to someone here. Here's a transcription of the stones:

In memory of John Gunn
Died March 24th 1921
Aged 69 Years

And

In loving memory of Charles,
The beloved son of Sarah Ann Gunn of Rawcliffe
Who died April 11th 1890
Aged 12 Years
Also
John, the beloved son of George and Hannah Mary Gunn
Who died September 29th 1903
Aged 8 Months

I hope these are useful to someone, even if it is just as a side-wards step on your tree. If you would like a copy of the photo just let me know.