Patrolman William E. Hennessy

Patrolman William E. Hennessy

Chicago Police Department, Illinois

End of Watch Monday, August 23, 1920

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William E. Hennessy

Officer William Hennessy and his partner were assigned to check on the conduct of patrons in a nightclub. When they arrived, an altercation ensued in which Officer Hennessy's partner was attacked by an offender. When Officer Hennessy rushed to his partner's aid, the offender began to fire a gun. Both Officer Hennessy and his partner, Officer James Mulcahy were fatally wounded.

Two men were arrested and held by the coroner. Both men were indicted in August, 1920; On October 20, 1921, both were acquitted.

One of the suspects died in a horse riding accident in 1923 and the other suspect died in 1939.


  • Age Not available
  • Tour Not available
  • Badge 2461

Incident Details

  • Cause Gunfire
  • Weapon Gun; Unknown type
  • Offender Acquitted

Most Recent Reflection

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On this 100th anniversary of your untimely departure rest in peace always knowing that your service and sacrifice will never, ever be forgotten by your law enforcement brethren.

Detective Cpl/3 Steven Rizzo
Delaware State Police (Retired)

August 23, 2020

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