I am sure you are right. The Australian patent for 'Super Disco' is not available to see. The U.S. patent mentions the seed parent of the new variety was the Fantasia variety (U.S. Plant Pat. No. 590) but I have no idea which 'Fantasia' that was. I have changed seed parent from Fantasia 1943 to Fantasia 74 because the breeder used the 1974 rose for another of his - 'Estelle de Meilland'.