EFFRONTES
A sect of heretics, in 1534, who scraped their forehead with a knife till it bled, and then poured oil into the wound. This ceremony served them instead of baptism. They are likewise said to have denied the divinity of the Holy Spirit.
Fuente: Theological Dictionary
Effrontes
an obscure Transylvanian sect of the sixteenth century, who not only denied the Holy Ghost, but, among other fooleries, cut their foreheads and anointed them with oil as a mode of initiation. Hence their name “exfrons” out of the brow (Eadie, Eccl. Cyclop. s.v.).