A few facts from wikipedia:
Abraham "Abe" "Grampa" J. Simpson
Almost all of Abe Simpson's biographical information is supplied by himself. Many of his stories seem to be wildly inaccurate, often physically or historically impossible, and occasionally inconsistent even with each other, suggesting that Abe is quite senile. Not many people know that Abe is a decorated war veteran.
Maude Flanders was the happily married wife of Ned Flanders. With Ned, she had two children, Rod and Todd Flanders, in whom she instilled her unwavering piety. Maude was a woman with many qualities: faith, chastity, charity. Maude Flanders was a devout Christian who once attended a Bible camp to learn how to be more judgmental.