William Patrick Conboy Jr.

Montgomery County Police Department — Gaithersburg, MD

Veteran → Veteran → Felonious

End of Watch December 29, 1973

Age 25

Tour of Duty 3 yrs

The Vigil Panel 113 ›

Gender Male

Incident Service The Sacrifice Military Department 20

Incident

Private William Conboy was shot and killed during an undercover narcotics operation at a hotel at 8777 Georgia Avenue in Silver Spring. He and another undercover officer had met the two suspects in a hotel lobby where they were patted down before being taken to the suspects' room on the 10th floor. Instead of the anticipated cocaine purchase, one of the suspects drew a handgun and shot Private Conboy in the back. Backup officers immediately entered the room and fatally shot one of the suspects. Private Conboy's partner was also shot and wounded by the suspect. Private Conboy was a U.S. Marine Corps veteran and had served with the Montgomery County Police Department for three years.

Survivors

He was survived by his wife and 2-year-old daughter.

In Our Keeping

Permanent identifier: BO-US-MD-EF7A5542
Stewardship: Maintained by NeuraWeb Global Inc.
Added to badge.nw: August 2, 2026
Last updated: August 2, 2026

Honored here by 1 tribute.

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Tributes

I served 1985 to 1993. You served too, before the badge - different uniform, same idea. You go where you are sent and you do not get to pick the call.
Private Conboy gave the Montgomery County Police Department 3 years.
Thank you for your service to the Gaithersburg community, and for your service before it. Gone but never to be forgotten.
Rest easy, brother.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Department Montgomery County Police Department

Type Police Department

Location Gaithersburg, Montgomery County, MD

Platform Identity mcpd.montgomery.md.us.gov.nw

Service Record

End of Watch December 29, 1973

Tour of Duty 3 yrs

Age 25

Gender Male

Incident Details

Cause Felonious

Weapon Handgun

Military Service

William Patrick Conboy Jr. served in the the United States military (1966â1969) before joining law enforcement.

View full service record on salute.nw →

Private William Patrick Conboy Jr. is one of 1 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 0% of all 97,759 officers honored here.

In MD, 195 of 377 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 51.7% of this state's fallen. That is 51.7 percentage points above the national rate of 0%.

At Montgomery County Police Department, 8 of 21 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 38.1% of this agency's fallen.

Montgomery County Police Department

of 21 officers

38.1% Felonious

MD — Statewide

195

of 377 officers

51.7% Felonious

Nationwide

of 97,759 officers

0% Felonious