Abraham Jay-Jedediah "Abe" Simpson, often known simply as Grampa, is a fictional character in the animated television series The Simpsons. Voiced by Dan Castellaneta, he is the father of Homer Simpson, and the grandfather of Bart, Lisa, and Maggie Simpson. In the 1000th issue of Entertainment Weekly, Grampa was selected as the Grandpa for "The Perfect TV Family".
Grampa is a World War II veteran and former farmer who was later sent to the Springfield Retirement Castle by Homer. He is known for his long, rambling, often incoherent stories and incompetence. He shares his name with Matt Groening's grandfather. However, Groening says he refused to name him, leaving it to other writers to choose a name. By coincidence, the writers chose the name Abraham.