Paul Farquhar
Legend
I'm not sure how mages and clerics would make any difference. The knight needs a war against a country that also has knights who follow (at least nominally) the chivalric code, so they can defeat them in battle and ransom them for profit.yea but there were no mages or clerics IRL, which easily compensate for your rivaling group of knight.
once more it shows that d&d ain't no simulation
Or a crusade against rich infidels whose gold you can steal.