Samuel Irving "Si" Newhouse, Jr. (born November 8, 1927), is an American heir, business magnate and philanthropist. Together with his brother Donald, he owns Advance Publications, founded by their late father in 1922, whose properties include Condé Nast (publisher of such magazines as Vogue, Vanity Fair, The New Yorker, etc.), dozens of newspapers across the United States (including The Star-Ledger, The Plain Dealer, The Oregonian, etc.), cable company Bright House Networks and a controlling stake in Discovery Communications.