Lady Shelley also lived in Berkeley Square, and, as noted in his Recollections, it was at her house on 8th May 1823 that Rogers heard this interesting reference to Napoleon from the Duke of Wellington:
"After his Austrian marriage, Metternich was sent to Paris to see him, and to report upon his character, and to discover whether he meant to be quiet. His answer, as he told me, was in three words, 'He is unaltered.' He had then resolved to invade Russia."