Brad Pitt and Angelina Jolie Twins: Knox Léon and Vivienne Marcheline Born: July 12, 2008 With a brood as large as the Jolie-Pitt clan, you'd think it would be difficult to come up with names for their babies. To our surprise, that's not the case. Angie and Brad are inspired by locales and family names when deciding on monikers for their fraternal twins. Knox was named after Brad's grandfather, whereas Vivienne was named in honor of Angie's late mother. So sweet!