According to her genealogical sketch, Anne-Louise de Montmorency was married to Napoléon Louis, 3rd duc de Talleyrand and lived from 1810 to 1858, marrying in 1829.
From pinterest.com/pin/129408189268011671/.
Empire style is hanging on into the 1820s, at least for casual wear, for teen-aged mlle. de Monmorency.
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