Were Waldensians Sabbath-keepers?
Seventh-day Adventists have been particularly interested in this movement, because many Protestants see them as a connecting link between the early church and the Protestant Reformation. Of special interest to Adventists is their practice of Sabbathkeeping, as already noted. Based on Ellen White’s statement in The Great Controversy, Adventists have believed that some Waldensians kept the Sabbath, but not necessarily a sizable group.
In response, the Waldensians, and even some Adventists, have said that Ellen White was not a historian. One Adventist historian has even gone so far as to suggest that The Great Controversy needs to be revised and brought up-to-date with present scholarship, because there is no primary source evidence for Waldensian Sabbath observance.
Damsteegt, P. Gerard, "Were Waldensians Sabbath-keepers?" (2017). Faculty Publications. 530.