WN. Those letters mean: "Welsh not". Back in the day, Welsh children would be punished for speaking Welsh (instead of English) and made to wear a wooden board

WN. Those letters mean: "Welsh not". Back in the day, Welsh children would be punished for speaking Welsh (instead of English) and made to wear a wooden board with WN on it around their neck. The board would be passed on through the day to the final transgressor who would receive a thrashing or similar punishment. Generally all of them would get a thrashing anyway - it was good for them! Edit: Not, not no ie WN: "Welsh not". Small but important difference.