Blouse (1823)

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JOURNAL OF A YEAR IN FRANCE, SWITZERLAND, AND ITALY
DURING THE YEARS 1819, 20, and 21
by Marianne Colston
London: G. and W. B. Whittaker
1823

Pg. 51:
   ...he wore a blue smock frock called a "blouse" (which is of the same form as the ancient dress of the Gauls)...

(OED has 1828 for "blouse."  I'll do more of the French travel books--there are a ton--after I do the rest of the continent--ed.)