The Vinegar Saint is a book written by Mearns Hughes and published in 1919. The book tells the story of a man named Martin Luther who was a vinegar maker in the town of Wittenberg. Martin was known for his sour and grumpy personality, which earned him the nickname ""The Vinegar Saint."" However, despite his reputation, Martin was a deeply religious man who struggled with his faith and his place in the world.One day, Martin was visited by a group of...