Orville 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 Canada, the only son of Old-Tut and Happy (née Dinsdale) Simpson.. Orville married Yuma Hickman while still in Canada. and had their first son, Hubert soon afterwards, with Tyrone coming two years later. A few years later, they had their third son, Cyrus. Sometime afterwards, they had their fourth son, Abraham Simpson.

Shortly after his birth, Orville, Yuma Hickman and their four sons emigrated to America, and moved into the Statue of Liberty. After a few years of living there, they were forced to move out when they filled the head with too much garbage. Their family then moved Springfield, North Takoma. Tyrone Simpson let home soon afterwards to move to Dayton, Ohio, where he still lives. In America, Orville and Yuma had another son, and named him Bill Simpson. 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.