1836 – Born in Cassel, Germany. One of the Haymarket martyrs.
1873 – Engel emigrated to America from Germany.
1878 – He became radicalized after moving to Chicago, first joining the Socialist Labor Party and then the anarchist International Working People’s Association (IWPA).
– Engel’s only involvement with the Haymarket "Conspiracy" was his attendance at the Grief Hall meeting.
1886 – He was indicted for throwing bomb at Haymarket gathering in Chicago, killing one police officer and leading to police-protestor melee.
– Convicted in political trial, along with seven other anarchists, despite absence of direct evidence.
1887 – Died by execution on November 11th.