|Orville J. Simpson
- "See, son, that's where we're going ... maybe not today, maybe not tomorra'. But someday."
- ―Orville J. Simpson
Orville J. Simpson, or Great Grampa Simpson, was born in the late 1800s in "The Old Country", which could have been in Ireland or Scotland.
Orville married Yuma Hickman in the early 1900s. The two soon had their first son, Hubert, with Tyrone coming two years later. A few years later, they had their third son, Cyrus. Sometime afterwards, they had their fourth son, Abraham.
Shortly after his birth, Orville, Yuma and their four sons emigrated to America, and moved into the Statue of Liberty. For a few years they lived here, but they were forced to move out when they filled the head with too much garbage. Their family then moved Springfield. When Tyrone grew up he moved to Dayton, Ohio. In America, Orville and Yuma had another son, and named him Bill. Abraham and Cyrus grew up, with them both becoming navy pilots in WWII. Cyrus crashed his fighter plane in Tahiti, and moved there permanently, later becoming married to 15 women, to whom he is still married. Bill grew up and became a communist. During the war, Orville and Yuma had their final child, and named him Chet. Orville and Yuma later grew old and passed away. Chet grew up to and started to run an unsuccessful shrimp company. Orville passed away shortly after Mona abandoned the family.
Orville was seen in Heaven by Bart after getting hit by a car, strangling young Homer, hinting the habit is a family trait. He is present in Grampa's story when Grampa tells the family of his arrival in the U.S. He is the only son of 'Old-Tut' Simpson and 'Happy' Dinsdale.