Google is giving me Lady Glove, sage and comfrey. It does look a lot like Bocking 14 though. However it can't be because this is clearly wild (if it is comfrey).

I don't know. If you want some surefire comfrey order it from nostr:npub1ugnq57hn8va6xqr5zywy2eunem6c624583vkt0dmv40ep7tnnxkqrr898l. I know he has Bocking 4 and 14. I sold him the root stock for his B4 variety so I can personally vouch for those genetics.