John Foxe's Book of Marytrs is an account of the sufferings of people condemned for their faith throughout the centuries, beginning with the 1st century. It was first published in 1563 and was read widely by English Puritans, reinforcing their attitudes, and prejudices, towards Roman Catholics for years following. The work concentrates on the martyrdom of Protestants at the hands of Catholics, including the treatment of Elizabeth, while still a princess, by her sister Mary.
As David Starkey points out, the account of Elizabeth's suffering at this point must be taken with a pinch of salt as John Foxe was anything but an unbiased recorder. He notes that, according to Foxe, Elizabeth refused to get out of the barge taking her to the Tower upon her arrival at Traitor's Gate although the Tower diarist at the time asserts that she landed at Tower Wharf rather than at Traitor's Gate. As Traitor's Gate is a water gate, it would not have been possible to deliver Elizabeth there as the tide in the River Thames was, at that time, too low.