Jonathan is a fictional character portrayed by Edward Kiniry-Ostro in the TV series It's Always Sunny in Philadelphia.
They appear in 1 episodes out of a total of 172 aired so far
Episodes1
Dennis and Dee's Mom Is Dead
episode S3.E3 september 2007After Dennis and Dee's gold-digging mother dies from a botched plastic-surgery operation, Dee and Frank scheme to get their name in the will, while Dennis inherits the house and makes plans for a party mansion.