Archbishops of Canterbury used to be absolute fire-eaters, to use an English expression. About fifty years before William the Conqueror and the Normans invaded Britain, the Danes did so and established their king. When tribute [bribes] was demanded of the church, Alphege politely, but resolutely, told the Danes that it wasn't going to happen. A collection of drunks then abused and murdered him for not giving them money. [Interestingly, something similar happened to a Jamaican priest just a few years ago, although not by Danes.]
More about him may be found here. By rough count, about eighteen Archbishops of Canterbury have been martyred or otherwise killed for their faith. Nowadays, they are simply ridiculed by the BBC and Oxford faculty.