Babelfish converted that into:
These last support the fairs, these places where the merchants met on fixed date, most famous being that of Lendit (of former French the endit, Latin indictum, "what is fixed"), in the Saint-Denis plain close to Paris, and where one sold in particular the parchment for the universities and it lasting approximately two weeks, until Midsummer's Day.
Difficult to extract contextually what it could be.
PH