Spotting his flute, poetry books and drawings of cuckoos, visitors can't escape the impression that Jenner, the eighth son of Berkeley's vicar, was an inquisitive, well-meaning and downright eccentric Georgian man. For example, he met his future wife when he accidentally crash-landed his hot air balloon in her garden. He also secretly took a cutting from a grapevine belonging to Capability Brown, a famous 18th-Century English gardener and landscape architect, at Hampton Court to plant in his greenhouse, which is now completely filled by the flourishing vine.