Here are some other examples of folkies or corresponding groups. I'm curious about whether non-german Mudcatters do remember somebody although most of them started in the 60' and others reached regional fame only...

City Preachers - a Hamburg group founded by John O'Brian Docker which amongst others, included Inga Rumpf (semi-commercial on first record)

Les Humphreys Singers - a more commercial approach

Ingo Insterburg - comedian-like group from Berlin which included Karl Dall

Stephan Sulke

Mike Krüger - "(Mein Gott), Walther"

Frank Baier - "Lied vom Bauern Maas"

Manfred Jaspers - "Der blinde Michel oder Die Reise nach Dortmund"

Saitenwind

Bruno und Klaus - "Kalkar-Lied"

Kladderadatsch

Kraut un Riewe

Dood un Deiwel

Andre Lamberz

That's for today,

Manfred