paladin

A paragon of chivalry; a heroic champion.

A strong supporter or defender of a cause.

Any of the 12 peers of Charlemagne’s court.

In the cycle of romances of Charlemagne, one of the knightly champions who accompanied that monarch to war; hence, by extension, a knight errant; a heroic champion.

A knight-errant; a distinguished champion.

A heroic champion (especially a knightly one).

A defender or advocate of a noble cause. (A defender of faith).

Any of the twelve Companions of the court of Emperor Charlemagne.

someone who fights for a cause