Who is the patron saint of taxi drivers?

Fiacre of Breuil ,Died: August 18, 670 The French cab derives its name from him.

Saint Fiacre is also the patron saint of taxi drivers. The connection arose from the fact that The Hôtel Saint Fiacre, in the Rue St-Martin, in Paris, France, rented carriages. People who had no idea who Fiacre was referred to the small hackney coaches as "Fiacre cabs", and eventually as "fiacres". St. Fiacre, is memorialized each year on August 30. People who had no idea who Fiacre was, referred to the small hackney coaches as "Fiacre cabs", and eventually as "fiacres". Similarly, Viennese horse-drawn buggies are referred to as Fiaker.