In "Padre de Familia", he was born in Mexico, where his mother had tried unsuccessfully to abort him. Peter agreed to abandon a revolt of his father-in-law, Carter Pewterschmidt's servants, in exchange for him using his connections to make Peter a United States citizen. According to "I Dream of Jesus", Peter attended Providence High School. Together, Peter and Lois have three children, Chris, Meg, and baby Stewie. After a mix up at a sperm bank, Peter also became the biological father of Bertram. Previously, due to selling sperm to raise money for dial-up modem impression lessons, he also found himself the father of many other children in "A House Full of Peters". Out of pity, he also adopted an intellectual talking dog named Brian, who formerly lived on the street as a stray.