Isaac

Isaac
Family	Sarah (mother) Abraham (father) Jacob (son) Joseph (grandson) Unknown great-grandchildren
Cartoon debut	Francine's Split Decision (mentioned)

"To truly understand you have to go back to the beginning of the Jewish people. When Abraham and Sarah begat Isaac, who begat Jacob, who begat Joseph, who begat..." – Brain to Francine, "Francine's Split Decision"

Isaac was someone from "the beginning of the Jewish people." "Francine's Split Decision"

Trivia

• Isaac is mentioned in the Bible, in the book of Genesis (which is part of the Torah).