10 August – The King becomes mentally unstable; his cousin Richard, Duke of York acts as regent. The king will be unaware of the birth of his only son, Edward, on 13 October.
19 November – the Duke of York is reinstated as regent.
November–December – Bonville–Courtenay feud leads to continued rioting and rebellion in Devon including sacking of Exeter and the first battle of Clyst Heath (15 December).
↑Storey, R. L. (1966). The End of the House of Lancaster. London: Barrie & Rockliffe. p.167. ISBN0214666395. the most notorious private crime of the century.