"Loan-a Lisa" is the second episode of "The Simpsons"' twenty-second season, in the episode, Lisa helps fund Nelson's bicycle company with money given to her from which animated fictional character, as part of whose inheritance?
Loan-a Lisa:  In the episode, Lisa helps fund Nelson's bicycle company with money Grampa Simpson gives her as part of his inheritance, but after Nelson meets Facebook founder Mark Zuckerberg and is convinced he can be successful by dropping out of school, Lisa tries to convince Nelson to stay in school. Grampa Simpson: Abraham Jedediah Simpson II, often known as Grampa, is a fictional character in the animated television series "The Simpsons".
Grampa Simpson