Roman Catholic Diocese of Passau Lorch, a Roman station and an important stronghold at the junction of the Enns River and the Danube, Christianity found a foothold in the third century, during a period of Roman domination, and a Bishop of Lorch certainly existed in the fourth. During the great migrations, Christianity on the Danube was completely rooted out, and the Celtic and Roman population was annihilated or enslaved. In the region between the Lech River and the Enns, the wandering Bajuvari were converted to Christianity in the seventh century, while the Avari, to the east, remained pagan. The ecclesiastical organization of Bavaria was brought
Grisa nera are grown almost exclusively in the Piedmont region strongly suggest that both varieties are native to Piedmont. Grisa nera is a mid to late ripening variety that is used for both wine and table grape production. The vine can be very vigorous, producing large foliage but often has low fertility and is generally low yielding. While Grisa nera has good resistance to most fungal diseases, such as downy and powdery mildew, it is susceptible to the viticultural hazard of coulure. Grisa nera is almost exclusively found in the foothills of the Alps in the Piedmont wine region of Italy. Here