Shebang, by Jingo!
The lines above look (and sound) like identical oaths, but that happens only because of the ambiguity inherent in the preposition by. No one swears by my name, while Mr. Jingo has not written or published anything. Nowadays, jingoism “extreme and aggressive patriotism” and jingoist do not seem to be used too often, though most English speakers still understand them, but in Victorian England, in the late nineteen-seventies and some time later, the words were on everybody’s lips.