Claim: Beau Brummell, Lord Alvanley, Henry Midmay, And Henry Pierrepont (dubbed "the Dandy Club" by Byron) jointly hosted a masquerade ball at Watier's private club in July 1813–an event that marked Beau Brummell's downfall.
Evidence: The four were considered the prime movers of Watier's, dubbed "the Dandy Club" by Byron. This changed in July 1813, at a masquerade ball jointly hosted at Watier's private club by Brummell, Lord Alvanley, Henry Mildmay and Henry Pierrepont. The Prince Regent greeted Alvanley and Pierrepont at the event, and then "cut" Brummell and Mildmay by staring at their faces without speaking. The incident marked the final breach in a rift between Brummell and the Regent that had opened in 1811, when the Prince became Regent and began abandoning all his old Whig friends.