The Renaissance aristocrats have remained famous for the ease with which one of the enemies sbarazzavano, but as killing?
The weapons “favorite” were essentially two: the dagger and the poison, with a predilection for the second (you see https://www.pilloledistoria.it/3435/storia-moderna/luso-veleno-nel-rinascimento).
Although it was considered the weapon of cowards fact, the poison and left no trace (quasi) He could always get away with it; the use of cantarella by Borgia, just to give an example, It has become legendary (albeit, probably, with some exaggeration).
The cantarella was nothing more than a variant of the most well-known and widespread arsenic, “the king of poisons and poison of kings”, It sold under the counter at the time even by druggists (today's pharmacists).
Alternatively, as we said, there was the dagger, in particular the stiletto, which with its thin blade and sharp, It could be hidden no problems inside the sleeves of clothes.
Nobles, almost always also rich, generally do not dirtied their hands and commissioned murders in professional assassins, then rewarded handsomely.
Sometimes, finally, to be safe and be sure not to fail the “mission”, was combined action of both arms wetting the knife blades with poison, the most widely used of which was a preparation derived from’aconite, a highly toxic plant (Photo gives: neupre.blogs.sudinfo.be ).