Nils Aréhn was born on December 30, 1877 in Sundsvall, Västernorrlands län, Sweden as Nils Oscar Gerhard Ahrén. He was an actor, known for The Phantom Carriage (1921), Lady of the Camellias (1925) and Thomas Graals myndling (1923). He died on April 1, 1928 in Stockholm, Sweden.