Mona Simpson's father

Mr. Olsen (born March 16, 1893) is the father of Mona Simpson and the husband of Mrs. Olsen. He is the maternal grandfather of Homer Simpson, the paternal great-grandfather of Bart Simpson, Lisa Simpson, and Maggie Simpson, and also the grandfather-in-law of Marge Simpson. in the episode "The Winter of His Content" Homer reveals that he is alive, yet Grampa never visits him or acknowledges his existence; defending his own behavior towards Grampa. Lisa is shocked about Orville being alive and nervously changes the subject however this could also be Orville Simpson. 
== Episode Appearances ==
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Category:Characters
Category:Alive characters
Category:Male characters
Category:One-Time Characters
Category:Unseen characters
Category:Non-speaking characters
Category:Nameless characters
Category:Scandinavia
Category:Olsen family
Category:Simpson family
Category:Husbands
Category:Fathers
Category:Grandparents
Category:Married
Category:1893 births
Category:Grandfathers
Category:Centenarians