Abraham Simpson - Wikisimpsons, the Simpsons Wiki

Abraham "Abe" Jay[4] Simpson II, usually referred to as Grampa Simpson or simply Grampa, is the patriarch of the Simpson family, the father of Homer Simpson, Herbert Powell, and Abbey and the paternal grandfather of Bart, Lisa, and Maggie Simpson. Abe is a World War II veteran later sent to the Springfield Retirement Castle by Homer. He is known for his long, rambling, and often inaccurate stories and general incompetence.

Abraham Simpson, Sr., Simpsons Wiki

Increase - Wikisimpsons, the Simpsons Wiki

Doreen - Wikisimpsons, the Simpsons Wiki

List of The Simpsons characters - Wikipedia

Orville Simpson, Simpsons Wiki

The Simpsons (season 29) - Wikipedia

Gil Gunderson - Wikisimpsons, the Simpsons Wiki

Clarence Bouvier - Wikisimpsons, the Simpsons Wiki

Bert Albertson - Wikisimpsons, the Simpsons Wiki