Unulf (or Unnolf) was possible a Duke of Spoleto briefly in 752.
[1][self-published source?]
He is recorded to have reigned for a few years, but this is uncertain.
Aistulf, the king, took the duchy into his hands sometime (either immediately or after a brief period corresponding to Unulf's reign) after the death of Lupus.
This biography of an Italian noble is a stub.