GR translation: that year’s king of Bohemian clowns

[Mike Jing]

V698.2-10, P711.32-712.1   Pirate Prentice saw one in 1936, during his
excursion with Scorpia Mossmoon, at the Chelsea home of James Jello, that
year’s king of Bohemian clowns—but a minor king, from a branch prone to
those loathsome inbred diseases, idiocy in the family, sexual peculiarities
surfacing into public view at most inappropriate times (a bare penis
dangling out of a dumpster one razor-clear and rainwashed morning, in an
industrial back-street about to be swarmed up by a crowd of angry workers
in buttontop baggy caps carrying spanners three feet long, Kelly crowbars,
lengths of chain, . . . .

What exactly is the "king of Bohemian clowns"?