[1] One account has Charles' brother, James, Duke of York returning from a hunt on Hounslow Heath and stopping his coach along Constitution Hill to avoid hitting the king walking across the road.
On 11 January 1696, Sir Henry Colt, 1st Baronet was challenged to a duel by Robert "Beau" Fielding (future husband of Charles II's mistress Barbara Palmer, 1st Duchess of Cleveland), near what is now the site of Bridgewater House.
[2] The area was the scene of three assassination attempts on Queen Victoria—in 1840 (by Edward Oxford), 1842 (by John Francis) and 1849 (by William Hamilton).
In 1850, the former Conservative Prime Minister Sir Robert Peel was thrown from his horse on Constitution Hill by the gate into Green Park; he suffered a fatal injury and died three days later.
Thanks to the swift intervention of comedian and enthusiastic environmentalist Spike Milligan they were removed within days and the old gas lamps are still there.