Their basic idea was to marry Mary to Norfolk, England's only Duke. Elizabeth I had Mary locked away in various castles, but she still became the center of numerous conspiracies to overthrow the upstarts who had displaced the ancient aristocracy. The problem for Elizabeth I was that Mary was a Catholic claimant to the English throne. Things began to fray around the edges when Mary Queen of Scots fled to England. Queen Elizabeth I sought to bring about a religious settlement with the objective of establishing in England a Protestant Anglican Church with herself as the Supreme Governor. Please help with verifying or updating this infobox. 5.2 Sir Thomas Gresham's Currency Reform.3.2 Adam Smith publishes 'The Wealth of Nations'.2.4 The Creation of the London Stock Exchange.1.14 The Decree of Indulgence and the Bill of Test.1.9 Bloody Mary and King Felipe of England.