This clock face dated 1813 is attached to a house in Castleton, its a bit of a mystery.
The only reference to 1813 I can find in association with the village is that a methodist chapel was built in that year. That was in turn replaced in 1871, so perhaps this is the orginal chapel or the clock face was just removed from it ?
I wonder where the hands went?
Your explanation sounds very feasible, I wonder if the flower symbol can give any clues.