“Oaths among gentlemen also figured in political activities. In 1823, for example, Willie P. Mangum, a North Carolina planter [and future U.S. senator], came to an agreement with Daniel L. Barringer, a militia general and rival for [Congress]. The pair swore before Sheriff H. B. Adams not to campaign for votes — canvassing being considered beneath dignity in low-country North Carolina.
“But later, before the election, each accused the other of violations. Adams certified that, though both had ‘pledged their honours…. in a most sacred manner,’ Barringer had violated his oath. Furious and embarrassed, Barringer challenged Mangum to a duel, but friends intervened successfully to prevent it.”
–– From “Southern Honor: Ethics and Behavior in the Old South” by Bertram Wyatt-Brown (2007)