Ret Marut was the pseudonym of a young European man who later became B. Traven, the famously reclusive radical novelist. Marut was active in Germany around the time of WWI, producing his own journal and participating in the Bavarian Council Republic, before escaping the ensuing repression and fleeing across Europe. He was imprisoned for some months in London before disappearing - and then is generally thought to have made his way to Mexico where he settled and transformed himself into B. Traven the novelist. Some scholars still dispute the facts of Marut/Traven's pedigree.
Online-Archiv der Ziegelbrenner-Zeitschrift von Ret Marut, veröffentlicht in Deutschland 1917-1921.