Poyning or Poynings It is absolutely and without a doubt Sir Edward Poynings See the Oxford Dictionary of National Biography entry by Steven G Ellis Poynings Sir Edward 1459 1521 Oxford Dictionary of National Biography Oxford University Press 2004 accessed 2 March 2008 As such the law 10 Henry VII c 9 should be and generally is described as Poynings law For examples see R D Edwards and T W Moody The history of Poynings law part I 1494 1615 Irish Historical Studies II 1940 41 415 16 or C I McGrath The Making of the Eighteenth Century Irish Constitution Government Parliament and the Revenue 1692 1714 Dublin 2000 That said it is listed as Poynings s law in the index of David Dickson New Foundations Ireland 1660 1800 Dublin 1987 246