Johannes Holzmann

Johannes Holzmann
Born(1882-10-30)30 October 1882
Tuchel, Prussia (now Tuchola, Poland)
Died28 April 1914(1914-04-28) (aged 31)
Body discoveredMoscow, Russian Empire
Resting placeWeißensee
Other namesSenna Hoy
Criminal penaltyFifteen years of hard labor

Johannes Holzmann (30 October 1882 – 28 April 1914) was a German anarchist writer and activist who generally went by the pseudonym Senna Hoy.