Wikipedia says that Cavalier was originally coined as a pejorative term. Its root can be found in Shakespeare's cavaleros describing an "overbearing swashbuckler or swaggering gallant." During the English Civil War, Cromwell's Parlimentarians used the word as a derogatory term assigned to the Royalists.
However, for our purposes, we are using Edward Simmons description of a Cavalier: "a Child of Honour, a Gentleman
well borne and bred, that loves his king [James] for conscience sake, of a
clearer countenance, and bolder look than other men, because of a more