The freelancer and illusionist are both definitely the most obvious choices for the character you describe.
You could also think about using the Warlock class for the combination of combat and magical skills. It could be hard to be a good jester as a warlock since the class has no innate bonuses to appropriate secondary skills, but if you take the "Aptitude in a Field" advantage you could lower the cost of the subterfuge group to 1 and easily catch up to an illusionist or other prowler-type character without spending too many points. Of course you then need 2 creation points for The Gift, but I'm sure you could think of a disadvantage to take for the extra point you need. That's my best suggestion.
I also just had the thought that you could consider the Paladin class. Good combat skills, innate Zeon bonus, and makes a great bodyguard. The lack of subterfuge makes the jester aspect difficult, but you could emphasize the Style and Persuasion skills combined with Dance and Music to be more of an "Entertainer" type of jester and less of a "Clown" type of jester. You'd never be an amazing spellcaster, but you could definitely get Shield of Light (a must for any bodyguard!) and a handful of illusion spells (really helps compensate for the lack of subterfuge skills).
Come to think of it, a paladin dancing around in colorful armor playing a little mandolin sounds just as entertaining as some guy juggling with his feet. Paladins make better jesters than I thought ^^.