On this date, April 26, 1478. two of the Medici brothers were attacked during Mass at a cathedral in Florence Italy. Lorenzo escaped but Giuliano was killed. The pope knew of the assignation attempt most likely even signed off on it. Tow of the leading families, were arguing over who would handle the banking of the Vatican. History tells us that the Vatican, specifically the pope wanted to drop the Medicis. So this assignation plot was devised.
Assignation of Lorenzo Medici