Szlachta historians and chroniclers. These involve a presumed descent from the ancient Iranian tribe known as Sarmatians, who in the Second century AD occupied land that is today's Ukraine, or from Japheth, one of Noah's sons - by contrast, the peasantry were said to be the offspring of another son of Noah, Ham — and hence subject to bondage under the Curse of Ham—and the Jews as the offspring of Shem). Other fanciful theories included its foundation by Julius Caesar, Alexander the Greator regional leaders who had not mixed their bloodlines with those of 'slaves, prisoners or aliens'. Another theory describes
Ennoblement personal virtue: Shem, Ham and Japheth sprang from the same father, yet Ham was ignoble and King David rose from shepherd to become king through sheer faith and soldierly courage. Bartolus defined natural nobility by reference to Aristotle, who in his "Politics" explains how some are marked out for freedom by their virtues (and specifically by their capacity to rule), and are so distinguished from the mass of men whose talents fit them only for a servile role. Those free men whose virtues thus fit them to rule Bartolus defines as the natural nobility. With regard to natural nobility, Bartolus