Rich Man, Poor Man (1976)

S3E14 Peter Griffin: Husband, Father... Brother?

In an effort to connect Chris with his Irish ancestry, Peter discovers a surprising link to Nate Griffin, an African American man in their family history. Eager to explore this newfound heritage, Peter struggles to fully embrace it. Meanwhile, when Lois’ father, Carter Pewtershmidt, gathers the Griffin kids to share his own family tree, they stumble upon a shocking secret that changes everything.