Justin Theroux: Justin Theroux. Actor: Mulholland Drive. Justin was born and raised in Washington, DC, the son of Phyllis (Grissim), a writer for The Washington Post, and Eugene Theroux, a corporate lawyer. He is a nephew of writer Paul Theroux and a cousin of journalists Louis Theroux and Marcel Theroux. His father is of French-Canadian and Italian descent, and his mother has English and German ancestry. Theroux graduated from Bennington College with...