Arnold of Brescia or John Valdes . I would say John Valdes who founded the Poor Men of Lyons. So the answer is Waldensians.

Emilio Comba has written:

'Storia della Riforma in Italia'

'I nostri Protestanti'

'Waldo and the Waldensians Before the Reformation'

'Storia de' Valdesi' -- subject(s): Waldenses

Most people accept that Anabaptists originated in the 16th century, during the Radical Reformation. However, some groups before the Anabaptists had the same principles. These groups include the Waldensians, the Brethren of the Common Life, Dutch Sacramentists, and the Hussites.

Yes. Look up the history of the Waldensians, the Alibigenses, or the behaviour of the so-called "Inquisition" throughout Europe in the middle ages and onwards. You will find that they were massacred simply for disagreeing with the Roman view of Christianity.

Well, he came much before the "reformation", but he nonetheless reformed the Catholic Church in his time. He opposed purgatory, transubstantiation and the authority of the Pope -even translated the New Testament into French from Latin, which was huge. Today - the Waldensians still exist even as an evangelical protestant denomination