 The episode was written by Jay Kogen and Wallace Wolodarsky and directed by David Silverman . The discount lion safari in the episode that the Simpson family visits was based on the drive @-@ through Lion Country Safari , located in Loxahatchee , Palm Beach County , Florida , that Kogen used to visit when he was younger . " Old Money " was the first episode to feature Grampa 's full name , Abraham Simpson . Matt Groening , creator of The Simpsons , named the main characters after his own family members ( except for Bart , an anagram of brat , which he substituted for his own name ) , but refused to name Grampa after his grandfather , Abram Groening . He left it to the writers to choose a name and they chose " Abraham " , not knowing that it was also the name of Groening 's grandfather . 
