Another word for a jester

The Wordnik Word of the Day for July 17, 2012 is

merry-andrew
http://www.wordnik.com/words/merry-an...

(noun) One whose business it is to make sport for others by jokes and ridiculous posturing; a buffoon; a clown.

The origin of 'merry-andrew' has long been disputed. It may come from the stage name of a particular performer at the Bartholomew Fair in the 17th century.