The red grape variety comes from Italy. The parentage (parenthood) is unknown. But Cassano is also a synonym for the grape varieties Aglianico, Malvasia Nera di Basilicata, Nerello Cappuccio, Nero di Troia and Sangiovese. Found on https://glossary.wein.plus/cassano
1) Italian surname 
The red grape variety comes from Italy. The parentage (parenthood) is unknown. But Cassano is also a synonym for the grape varieties Aglianico, Malvasia Nera di Basilicata, Nerello Cappuccio, Nero di Troia and Sangiovese.