This family was inspired mainly (Normal and Italic style ) by a Didot pattern font used in Rennes (France, Britanny) by Cousin-Danelle, printers, for "Antiquités historiques et monumentales... etc", an historic guidebook for a journey through a part of (French) Brittany in 1820, but, naturally, also many other books.
The present version contains four files : "1820 Modern" Normal and Italic style, "1820 Modern Large" Normal style and "1820 Modern Narrow" Normal style, each style with small caps.