From:
HISTORY OF THE ANCIENT CHRISTIANS - HISTORY OF THE TEN PERSECUTIONS OF THE VAUDOIS
"Rainerius acknowledges, “that among all the sects which are, or ever were, none have been more
pernicious to Rome than that of the Leonists; and among other causes he gives this as the first, that it is the most ancient of all; since some
affirm, that it has continued from the
time of Sylvester, or from the times of the
Apostles.”
=========== Prior names for that group
"Waldenses were called by several different names:
Leonists, Vallenses, Valsenses, Vaudois and others"
from:
The Waldenses, part 1 - Steps to Life
Years of persecution failed to wipe out this faithful church so Rome tried to destroy their history through false accounts of their origins and doctrines
. The enemies of the Church in the Wilderness have tried to trace their name to Peter Waldo, an opulent merchant of Lyons, France, who began his work about 1160. However, evidence is clear that the name Waldenses comes from the Italian word for “valleys” and as they spread over France they were called Vaudois which means “inhabitants of the valleys.” Waldo was converted in his mid-life and labored to spread evangelical teachings. When he met persecutions he fled to the Waldenses. But evidence is ample that the people of the valleys were an organized body for hundreds of years before he lived among them.
The Ancient Beginnings of the Waldenses
There is abundant evidence that the history of the Waldenses dates back to the time of the apostles. It is their claim that their religion passed to them from the apostles and in fact even the writings of their enemies give credence to this. (Note that the Waldenses were called by several different names:
Leonists, Vallenses, Valsenses, Vaudois and others.)
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Persecution of the Waldenses in France - Fox's Book of Martyrs