Context: People from Plymouth are known as Plymothians or less formally as Janners. Its meaning is described as a person from Devon, deriving from Cousin Jan (the Devon form of John), but more particularly in naval circles anyone from the Plymouth area.

Question: What are Plymouth residents commonly called?
Answer: Plymothians

Question: What colloquial term is used for Plymouth residents?
Answer: Janners

Question: After what figure are Janners named?
Answer: Cousin Jan

Question: In Devon, Jan is another way of saying what common English name?
Answer: John