Why Angelina Jolie choose her twins, Knox Leon and Vivienne Marcheline these names? First of all, she name her sons with the name ending in 'x', for example Maddox and Pax. Thus, that's Knox's name was chosen. And the name Leon was chosen because it has family connections. As for Vivienne Marcheline, the name Vivienne has the meaning of meaning of "life, alive."
Source
