A little knowledge is a dangerous etc.
Talking Points Memo has a brief note about the announcement that the skeleton recently found in England most probably is that of Richard III. The TPM news item is headed "Tear-Falling Pity Dwells Not In This Eye" — a line uttered by Richard in Shakespeare's play, Richard III. In the note, TPM refers to Richard as "the notorious Richard III".
Which makes me suspect that David Kurtz, who apparently wrote that TPM item, has drawn his knowledge of Richard from Shakespeare's version of the man. Shakespeare, who was writing during the reign of Elizabeth I, the granddaughter of Henry VII, the man who ended Richard's reign and life at the Battle of Bosworth Field. Shakespeare, who understood politics so well and understood the value of not pissing off Elizabeth by casting doubt on the rightness of her grandfather's violent takeover of the country.