This period witnessed several changes of government as the conciliar rule of Henry VI’s minority gave way to the ascendancy of the royal household, and then to protectorates while the King was incapacitated. The emergency measures of the civil war as Lancaster succumbed to York and York to Tudor had a noticeable effect on the personnel of the Commons and the business of the Parliaments, most notably in the passing of Acts of Attainder. Charting the changing political allegiances of MPs in response to local conflicts and the rivalry between magnates at the centre lies at the core of many of the biographies. Another theme is the MPs’ participation in attempts to prevent the loss of English possessions in France, and their involvement in measures to cope with recurrent crises at the Exchequer. These prompted the passing of successive Acts of Resumption. Increasing demand for seats in Parliament led to developm