The meaning of the term evolved over time into a broader sense, because in the Middle Ages the meaning of chevalier changed from the original concrete military meaning "status or fee associated with a military follower owning a war horse" or "a group of mounted knights" to the ideal of the Christian warrior ethos propagated in the romance genre, which was becoming popular during the 12th century, and the ideal of courtly love propagated in the contemporary Minnesang and related genres.[14]