While waiting for Wilfried's return I found this bilingual text of Goethe's Epiphanias here: Die heiligen drei König mit ihren Stern.

Regarding English Twelfth Night traditions; according to The Oxford Dictionary of English Folklore "...the recurrent feature is that there is invariably mention of cake and alcohol." There were ceremonies for selecting a King and a Queen for the night, and wassailing and straw-burning were other customs associated with the date. No specific customs relating to the three kings /wise men /magi however seem to have existed.