What Famous Book Was Written In The Vernacular?

What Famous Book Was Written In The Vernacular? What famous book was written in the vernacular? Important early vernacular works include Dante’s Divine Comedy, Giovanni Boccaccio’s Decameron (both in Italian), John Barbour’s The Brus (in Scots), Geoffrey Chaucer’s Canterbury Tales (in Middle English) and Jacob van Maerlant’s Spieghel Historiael (in Middle Dutch). What authors wrote