Queen Anne Boleyn, to marry whom, Henry VIII. divorced Catherine of Aragon. She was the mother of Queen Elizabeth.
Lady Jane Grey was proclaimed Queen by the Duke of Northumberland on the death of Edward VI., but the attempt to prevent Mary's accession was a failure, and Lady Jane Grey was executed in 1554.
Guy Fawkes: a conspirator who tried to blow up the King and Parliament in 1605.
The unfortunate princes were Edward V., son of Edward IV., and the rightful king, and Richard Duke of York, his younger brother, murdered in the Tower by the usurper Richard III., 1483.
[18. THE TOWER OF LONDON. PART II.]
Allegiance: the duty due from a subject to his liege the sovereign.
Lord Hastings was executed by order of the Duke of Gloucester, afterwards Richard III., in 1483 for supporting the side of Edward V. and his relations.
ordnance: artillery, cannon, big guns.
antipast: aftertaste.