Peter Griffin
Peter Griffin was born in Mexico and was raised by Francis Griffin and Thelma Griffin. As a child, he was baptized in the Roman Catholic faith, but, much to the chagrin of his father, Peter did not become a devout man.
Although Peter learns that one of his ancestors was a black slave named Nate Griffin, he later learns that Francis Griffin was not his real father. Her real father is an Irish drunk Mickey McFinnigan.