Sometimes Protestants, in their overeagerness to distance themselves from Rome, do adopt any non-Catholic group out there. When I was still involved in the Plymouth Brethren, I remember reading a book trying to trace the unbroken line of Brethren-like churches throughout history. I knew that I was reading shoddy history as soon as I saw them extolling the Montanists as a worthy example for the church to emulate - apparently ignorant that Montanus claimed to be the Paraclete and that his wife Priscilla was Jesus Christ reincarnate.
<sarc>Well, at least they weren't Papists!</sarc> ;-)
The Montanists also considered the utterances of their prophets to be new Scripture, IIRC.
Some of those pre-reformation non-Catholic groups are reasonable for Protestants to identify with. The Waldenses and Lollards are decent examples of proto-Protestants. Most of the rest you would not want to associate with. The Albigenses were probably the worst of the bunch. It's sad that they were slaughtered. It's absolutely not sad that their belief system was wiped out.
I thought she was supposed to be the Holy Spirit? Or was that Marcion...