By coincidence since the writers were being unaware the name of Groening's grandfather, went with Abraham, shortened to Abe, due to the fact during the Season 2 episode "Outdated Dollars" they needed his title being comparable to his new girlfriend Bea since they met when retirement home staff members https://garretts7161.blogdun.com/38553747/facts-about-bosch-jigsaw-dust-extraction-revealed