Ah, thanks for the link, Artful Codger! I'd once downloaded the pdf and couldn't find it again at archives.org
The 5 carols on Ten Provençal Carols are carols # 29 (Lei pastourèu 1&2), 5, 50 and 56. I made a literal English translation to "La cambo me fai mau and "Touro louro louro" (Tura lura lura) on Mama Lisa's World Occitania page. You can also find "Pastres rintratz vòstrei tropèus" on Mudcat (original lyrics, singable translation and midi). It must go back to the 16th century or so.
Micoulau is still Micoulau (or Micolau in standardized Oc), Nicolas is the French for it.