Yuma Simpson

Yuma Simpson (née Hickman), also known as Great Grandma Simpson, is Homer's grandmother from "The Old Country", which bears similar characteristics to Ireland or Scotland.

History
Yuma married Orville Simpson in the early 1900s. For a few years, they lived inside the Statue of Liberty, along with their sons, until the head of it was filled with too much garbage. Much of this story is questionable, as it is gained from one of Grampa's senile rants.