Hello Sam,
It's on the Coflein map, and the record's here:
http://www.coflein.gov.uk/pls/portal/coflein.w_details?inumlink=6000448
It's got a question mark but I think that's more about the type of monument than its existence, perhaps.
I changed the name you'd added, because it was called Bronheulog on Coflein. If you think the name you gave it is also used, please do add it as an alternative.

Thanks,
TMA Ed.