Marga López (21 June 1924 – 4 July 2005), born Catalina Margarita López Ramos, was an Argentine-born Mexican actress. Born in Argentina, she later acquired Mexican nationality. Marga López (21 June 1924 – 4 July 2005), born Catalina Margarita López Ramos, was an Argentine-born Mexican actress. Born in Argentina, she later acquired Mexican nationality.