" Such was Frémont’s fame that, in 1856, he was nominated as the Republican Party’s first presidential candidate. The ensuing campaign was “one of the nastiest in the nation’s history.” Indulging in the kind of unbridled calumny that makes modern-day mudslinging seem like the height of civility, Frémont’s adversaries branded him “a secret papist” (a harsh accusation in an era of virulent anti-Catholic bigotry), a bastard, an adulterer, a native-born Frenchman, and the son of a prostitute. "

― Harold Schechter , Man-Eater: The Life and Legend of an American Cannibal