Erasmus Benedicter (Benedigt) Kjerschow (Kjerskov) Zahl (19 January 1826 – 29 April 1900) was a privileged trader and an island owner at Kjerringøy in Nordland, Norway. Zahl is known as Nobel Literature Prize laureate Knut Hamsun's monetary supporter, and a representative of the old, traditional Nordland—Hamsun's ideal society. He is also internationally known through the character Mack, who appears in several works of Hamsun, among them Pan (1894), Dreamers (1904), and Benoni and Rosa (1908).[1]