Mary I of England

Definition and stakes

J. M. Stone The History of Mary I, Queen of England

During the first half of the sixteenth century, England had played but a subordinate part in the politics of Europe, and during Edward’s reign, the Government had been so weak that Charles V. had been able to demand Mary’s religious rights without compromise. France and the Empire had disputed the honours, the wealth, the prestige of the civilised world, and Mary had some reason to hope that by her marriage, she would raise her country to the rank of a first-rate power.
Source: Gutenberg

Mary Platt Parmele The Evolution of an Empire: A Brief Historical Sketch of England

Elizabeth, daughter of Henry and a disgraced and decapitated Queen, wore the crown of England. If heredity had been as much talked of then as now, England might have feared the child of a faithless wife, and a remorseless, bloodthirsty King. But while Mary, daughter of Katharine, the most pious and best of mothers, had left only a great blood-spot upon the page of History, Elizabeth's reign was to be the most wise, prosperous and great, the Kingdom had ever known.
Source: Gutenberg

Gilbert William Child Church and State under the Tudors (1890)

It is unnecessary here to enter into the mere facts of the political history; how Northumberland's ill-arranged and almost childish scheme fell to pieces and collapsed, and how, within a few days of Edward's death, Mary found herself undisputed Queen of England, and those who opposed her had not only gained nothing, but had put themselves entirety at her mercy. Mary was herself, perhaps, as unfit to rule as any sovereign who ever arrived at a throne in mature age.
Source: Wikisource

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