The discontent finally erupted in April, when seven of the major English and Savoyard barons – Simon de Montfort, Roger and Hugh Bigod, John Fitzgeoffrey, Peter de Montfort, Peter de Savoy and Richard de Clare – secretly formed an alliance to expel the Lusignans from court, a move probably quietly supported by the Queen. On 30 April, Roger Bigod marched into Westminster in the middle of the King's parliament, backed by his co-conspirators, and carried out a coup d'état. Henry, fearful that he was about to be arrested and imprisoned, agreed to abandon his policy of personal rule and instead govern through a council of 24 barons and churchmen, half chosen by the King and half by the barons. His own nominees to the council drew heavily on the hated Lusignans.