margo (born maría marguerita guadalupe teresa estela bolado castilla y o'donnell, may 10, 1917 – july 17, 1985) was a mexican-american actress and dancer. she appeared in many movies and television shows. she was best known for her roles in "lost horizon" (1937), "the leopard man" (1943), "viva zapata!" (1952), and "i'll cry tomorrow" (1955).