Inquisitions post mortem: 562. John, son of William de Cleydon, 'Inquisitions Post Mortem, Edward III, File 109', in J.E.E.S. Sharp, E.G. Atkinson, J.J. O'Reilly and G.J. Morris (eds), Calendar of Inquisitions Post Mortem, Vol. 9: Edward III (London, 1916), pp. 387-394 (British History Online, accessed 4 May 2018).