The Twisleton-Wykeham-Fiennes family /ˈwɪkəm ˈfaɪnz/ are the descendants of the 16th Baron Saye and Sele who was born Frederick Benjamin Twisleton and adopted the surname Twisleton-Wykeham-Fiennes in 1849 by Act of Parliament. He was the grandson of Thomas Twisleton, 13th Baron Saye and Sele and inherited the barony from his first cousin William Thomas Eardley-Twisleton-Fiennes in 1847. The surname is frequently shortened to Fiennes. Members of the family include the explorer Ranulph Fiennes and the actors Ralph Fiennes, Joseph Fiennes, and Hero Fiennes Tiffin.