Hi there,
I've received some confirmation that there was a drowning and that it would have been......possibly....in the 1920's! The pond fed a nearby mill, I've been told, and it was dried up/emptied in the 1950's. My source said he'd get back to me after I'd put an article in the local Welsh language paper, but have not heard anything for a couple of months now.
Any help would be greatly and gratefully received.
Diolch.