As a fan of The Simpsons, I mourned the news that Marcia Wallace, the voice of long-suffering Springfield Elementary teacher Edna Krabappel, died this week at the age of 70. It would actually be more accurate to say that I used to be a fan of The Simpsons. Like many people, I watched the show religiously in the 1990s and early 2000s but haven’t seen a new episode in a very, very long time. I was shocked, then, to learn that at some point Edna Krabappel became Edna Krabappel-Flanders.

Splitsider has compiled a whole slew of these amazing-but-true latter-years Simpsons data points, including the fact that Principal Skinner left Mrs. Krabappel at the altar. But this Krabappel-Flanders situation has hit me particularly hard. I’ve put my left-handed zither and Gordie Howe head shot to the side for a moment and created the three-question quiz below. Were you, fellow Simpsons buff, as clueless as I was?