Hi Helen, cnd,

The clock has been in the same family for 100 years now. I think they're farmers - I'll ask next time I speak to the owner. So no - no country house link.

The best clue we have is the maker and place of manufacture - Rowell of Oxford (the shop in the city centre lasted until 2019 - but the connection with the family is long since broken)

http://www.rowellofoxford.co.uk/
https://www.oxfordmail.co.uk/news/18073165.historic-jeweller-rowell-oxford-close/
https://www.facebook.com/RowellofOxford/

The start of each tune is very clearly marked by a break in the pins on the barrel - so no ambiguity there.

John