If you have Waldensian roots then you might want to check out the website at Finding Your Waldensian Ancestor. Looks like the author(s) did quite a bit of research on the subject as the site is very nicely laid out and is user friendly. There are several areas to explore which include an introduction to the non profit group Piedmont Families Organization, a brief
historical sketch of the Waldensian’s, reading list and family researchers.
They have compiled a list of known Italian/Waldensian surnames based on the book
by Osvaldo Coisson, I Nomi di Famiglia delle Valli Valdesi – some of which surprised me. You may also submit Waldensian surnames if yours is not already listed. Lots of good information. Worth a read.