Unit of mass in the late 18 th-century France: 1 livre (Paris pound) = 16 onces once (Paris ounce) = 8 gros gros = 72 grains. In modern units, the livre is equivalent to 489 grams or about 1.08 pounds in the "English" system still commonly used in the United States. [Lavoisier, Proust
The livre tournois was more or less the equivalent of a sovereign, the livre parisis worth about five shillings more. (Shaw, M.R.B. Joinville & Villehardouin: Chronicles of the Crusades, 362)