By coincidence since the writers were being unaware the name of Groening's grandfather, went with Abraham, shortened to Abe, for the reason that while in the Time 2 episode "Previous Dollars" they needed his title being comparable to his new girlfriend Bea since they satisfied when retirement home staff https://deanguydf.theideasblog.com/38401135/indicators-on-gcm-12-gdl-you-should-know