Here's what light the copyright registration (as an unpublished tune,
by the way) sheds on Bullshevicki.  The title, exactly as registered,
is "Bull-sheviki; wild rushin' one step."  Composer is given as Ivan
Kenbrockovitch; arranged by William C. Polla (violin).  The tune was
registered March 20, 1919, by Kendis, Brockman Music Company, New York.
This is obviously the explanation of "Kenbrockovitch".

 [ I asked Matthew and Frank Himpsl also about the pseudonym "Kenbrovin".
 [ Matthew replied: "'"Kenbrovin' is made up from the first three letters
 [ of the last names of the 3 composers, Kendis, Brockman, and Vincent."
 [ Ergo, "Kenbrockovitch" = "Kenbrovin", a skilled writing team!  --Robbie