Fenne was a merchant's daughter, probably from Murivel. She was one of the women Nivellen shared his home with for a year; she was the first with whom he slept on her own initiative, after both of them had gotten drunk.
She came up with the idea of scaring away unwanted visitors by riding on galloping Nivellen's back, completely naked and blowing the hunting horn of Nivellen's grandfather. After one year's companion with Nivellen, Fenne returned to her family with a huge amount of money. She was preparing to marry a tavern owner, a widower, with the money being her dowry.