Roman Catholic Diocese of Valva explained

The Diocese of Valva (Latin: Dioecesis Valvensis) was a Roman Catholic diocese. In the 13th century, it was united with the Diocese of Sulmona to form the Diocese of Valva e Sulmona.^{[1] [2]}

Notes and References

1. http://www.catholic-hierarchy.org/diocese/dv206.html "Diocese of Valva"
2. http://www.gcatholic.org/dioceses/former/valv0.htm "Diocese of Valva"