At the 1943 Argentine Film Critics Association Awards, Mac Dougall won the Silver Condor Award for Best Original Screenplay for his work Malambo (1942). He won it again the following year for his script co-written with Rodolfo González Pacheco and Eliseo Montaine for Three Men of the River (Tres hombres del río)(1943).
He settled in the province of Entre Ríos, where he owned several estancias.
His maternal grandfather was Hugh Mac Dougall, a Scottish man who emigrated to Argentina.
He was an Argentine writer, screenwriter, and journalist.
He was deputy director of the newspaper La Capital , of the city of Rosario and director of the literary supplement, and a founding member and, later, vice president of the Academy of Cinematographic Arts and Sciences of Argentina .