… Elizabeth from a very young age, had rejected the orthodoxy that a woman must marry, that a princess, particularly, had a duty to marry. Given all the human and political circumstances of tradition, expectation, security, and dynastic and familial duty which pressed in upon her, Elizabeth’s insistence that she would not marry was a remarkable instance of revolutionary action and independence of mind. In May 1558, she reminded Sir Thomas Pope that even when Edward VI was king she had asked permission ‘to remayne in that estate I was, which of all others best lyked me or pleased me … I am even at this present of the same mind … I so well like this estate, as I perswade myself ther is not anie kynde of liffe comparable unto it … no, though I were offered the greatest Prince in all Europe’. To remain unwed was also a masterly diplomatic ploy for the unfulfilled prospect of her marriage to various foreign princes kept the equilibrium between the great European powers in constant suspension.
Jane Dunn, Elizabeth and Mary: Cousins, Rivals, Queens