August 15th in history

You know the old “if a tree falls in the forest” philosophical puzzler. Well, I came up with one of my own. “If a historical figure is not mentioned in any of my books, should I still mention him or her in one of my Today in History posts?” I’ve decided that the answer is yes, assuming said historical figure is someone I find at least remotely interesting, of course.
On August 15, 778 AD, Roland, hero of the Chanson de Roland, was slain at Roncevaux Pass, trying to defend Charlemagne’s rear guard from the Basques.
August 15, 1040, the man known to us as Macbeth became King of the Scots when he defeated King Duncan in battle. Macbeth died on August 15, 1057, said to have been slain by Duncan’s son. He is, of course, the subject of one of Shakespeare’s most powerful and darkest plays, although the real Macbeth’s reign and personality differ markedly from the Bard’s Macbeth. Remind you of any other king who stars in one of Shakespeare’s plays?
On this date in 1196, Heinrich von Hohenstaufen’s even more odious younger brother, Konrad, Duke of Swabia was murdered. There are two accounts of his murder, both of which put him in the worst possible light One alleges that he was killed by the husband of a woman he’d raped, and the other version is that while he was raping a virgin, she bit him in the eye and he died of the resulting infection.
On August 15, 1369, Philippa of Hainault, queen of Edward III, died, thus freeing her lady in waiting, Alice Perrers, to come out of the shadows as Edward’s mistress, which she’d been for the past six years, since the age of fifteen.
August 15th was also the birthdate of two of the 18th century’s most interesting figures: Napoleon Bonaparte in 1769 and Sir Walter Scott in 1771. Napoleon was a military genius, of course, with ambitions to match his intellect. He also had a concise, if cynical, way with words, famously remarking that God was on the side of the largest battalions, although he was probably not the originator of that sardonic quip. He also said “Never interrupt your enemy when he is making a mistake” and “Revolution is an idea which has found its bayonets” and “In politics, stupidity is not a handicap” and “If you are going to take Vienna, take Vienna.” Sir Walter Scott is sometimes called the first historical novelist, although I have doubts about that myself. He probably did as much as anyone to nurture the legend of evil Prince John in his Ivanhoe saga.