What did the cavaliers get there nickname for?

The Cavaliers received their nickname due to their association with the Royalist supporters of King Charles I during the English Civil War in the 17th century. The term "cavalier" originally referred to horsemen or knights, emphasizing their aristocratic background and affinity for chivalry. Over time, it became synonymous with those who supported the monarchy against the Parliamentarians, who were known as the "Roundheads."