There are 2 bands under the name of Stigma Diabolicum one is a Norwegian Black Metal band formed in 1987. Changed their name to Thorns in 1989. Members:
Snorre W Ruch (aka Blackthorn / S.W.Krupp): Guitar (Thorns)
Marius Vold: Vocals, Bass (Mortem/Arcturus, Thorns)
Bard "Faust" Eithun: Drums (Emperor, Zyklon, Impostor, Aborym, Thorns, Scum, Blood Tsunami, Decomposed Cunt, Death Fuck) Discography:
Luna Des Nocturnus (Demo, 1989)
Live in Stjørdal (Demo, 1990)

Read more about Stigma Diabolicum on Last.fm.