Matilde Conesa Valls (april 13, 1928 - march 29, 2015) was a famous spanish voice actress, know for her roles in films, radio, TV (La bola de cristal) and animation (David the Gnome). Matilde Conesa Valls (april 13, 1928 - march 29, 2015) was a famous spanish voice actress, know for her roles in films, radio, TV (La bola de cristal) and animation (David the Gnome).