In June of 1739, what might have proven to be a festive early-summer afternoon celebrating the fiesta of Corpus Christi in Pátzcuaro (Mexico), instantaneously veered toward deadly combat when a fight broke out in the streets near a commonly used well in the San Augustín neighborhood, close by where the Corpus procession passed. The turn to violence occurred when two groups of men settled an apparently petty dispute with physical measures that ultimately claimed one participant's life. Two Indian nobles, don Juan de Vargas and his nephew, Santiago Valerio, and a Spaniard, Joseph Ruíz (alias Alvarez), composed one party. Two coyotes, Augustín Calvillo and Matías Martínez Serrillo, and a mulatto, Juan Joseph de los Santos, made up the other. The men knew one and other prior to the argument, though it is impossible to glean from the criminal record of the event whether any festering rivalry played into the dispute. Available evidence suggests that Vargas' refusal to accept a sip of charape (a type of pulque) from Ruíz triggered the incident. This rebuff represented an affront that drew Calvillo, Martínez, and Santos into the fray, siding against the native nobles. In the ensuing upheaval, Valerio sustained a fatal stomach wound.