Venetian is a Romance language spoken by about 2 million people mainly in Venice and the surrounding area, and also in Trieste, Croatia, Slovenia, Mexico and Brazil. The language is more closely related to French and Spanish than it is to Italian.
When Venice was an independent republic (between the 9th and 18th centuries), the Venetian language enjoyed considerable prestige. However literary Venetian lost out the the Tuscan dialect, which eventually became the national language of Italy.
source
wikipedia.org,
omniglot.com &
ethnologue.com