Lieutenant of the Tower of London in 1424 during the reign of Henry VI. During the reign of Edward IV, Richard Haute (died 8 April 1487) was Lieutenant from 1471 to 1473. John de Vere, 13th Earl of Oxford was Constable in the reign of Henry VII, at which time Sir John Digby was his Lieutenant. According to some sources, in the reign of Henry VIII Sir Thomas Lovell (died 25 May 1524) served as Lieutenant from Michaelmas 1512; however according to other sources, he was Constable of the Tower. Among the prisoners of state in Lovell's custody was the Pretender to the Crown, Lambert Simnel.
Henry Stafford (c. 1425 – 1471) Henry Stafford (c. 1425 – 1471) Sir Henry Stafford (c. 1425 – 4 October 1471) was the second son of Humphrey Stafford, 1st Duke of Buckingham and Anne Neville, daughter of Ralph de Neville, 1st Earl of Westmorland, and Lady Joan Beaufort. Henry's elder brother, also named Humphrey, died before their father, and so it was Henry's nephew, also Henry, who became the 2nd Duke of Buckingham. Stafford was the third husband of Margaret Beaufort, Countess of Richmond and Derby. The marriage was relatively long and successful and coincided roughly with the minority of Margaret's son, the future Henry VII