Following Wellington’s failure to form a ministry that would pass the Reform Bill as amended by the Lords, and with threats of popular violence, the King re-called Earl Grey as prime minister and agreed to create sufficient peers to pass the Reform Bill in its earlier version.

See Boyd Hilton, A Mad, Bad, and Dangerous People: England 1783-1846 (Oxford: Oxford University Press, 2006), p. 422. See also Godwin's entry for 1 March 1831.