- Oliver Cromwell: Lord Protector of England (1599-1658) There is definitely an association between John Knox and Oliver Cromwell. Knox, in his book The Reformation of Scotland, outlined the whole process without which the British model of government under Oliver Cromwell never would not have been possible. Yet Knox was more consistently covenantal in his thinking. He recognized that civil ...www.forerunner.com/champion/X0004_3._Oliver_Cromwell.html