Donald E. Knowlton
Agency patch
Deputy Sheriff

Donald E. Knowlton

Felonious
End of Watch August 22, 1960
Age 31
The Vigil Panel 95 ›
Gender Male

Incident

Deputy Sheriff Donald Knowlton was shot and killed after he and other deputies responded to a call involving an elderly man who was shooting at homes. When the officers arrived they located the man's footprints and followed them to a nearby outhouse in a field behind his home at 4022 Darwin Road. The suspect opened fire with a shotgun from inside the outhouse, striking Deputy Knowlton in the throat and chest. Deputy Knowlton was able to return fire and wounded the suspect, who was taken into custody. The 82-year-old suspect was found to be incoherent. He died in a Houston nursing home on September 8, 1963.

Survivors

Deputy Knowlton was survived by his wife and daughter.

In Our Keeping

Permanent identifier
BO-US-TX-CF83E9C7
Stewardship
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Added to badge.nw
August 2, 2026
Last updated
August 2, 2026

Honored here by 1 tribute.

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Tributes

I never knew you. I am standing here anyway.
Deputy Sheriff Knowlton served with the Harris County Sheriff's Office.
Thank you for your service to the Houston community. Gone but never to be forgotten.
Rest easy, Deputy Sheriff Knowlton.

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

Agency

Type Sheriff's Office
Location Houston, Harris County, TX
Platform Identity hcso.harris.tx.us.gov.nw

Service Record

End of Watch August 22, 1960
Age 31
Gender Male

Incident Details

Cause Felonious
Weapon Shotgun

Deputy Sheriff Donald E. Knowlton 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 97,772 officers honored here.

In TX, 1,461 of 2,422 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 60.3% of this state's fallen. That is 60.3 percentage points above the national rate of 0%.

At Harris County Sheriff's Office, 23 of 56 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 41.1% of this agency's fallen.

Harris County Sheriff's Office
23
of 56 officers
41.1% Felonious
TX — Statewide
1,461
of 2,422 officers
60.3% Felonious
Nationwide
1
of 97,772 officers
0% Felonious

National Cause Distribution

How Felonious compares to all causes of officer death in the memorial record. Donald E. Knowlton's cause is highlighted.

Felonious
1 (0%)
Accident
1 (0%)
Illness
1 (0%)
Cardiac
1 (0%)
Undetermined
1 (0%)
Suicide
1 (0%)

How Donald E. Knowlton Compares

Age at Death
31
This officer
Avg for Felonious: 39.0 years

When Felonious Deaths Occur

Monthly distribution of Felonious deaths across the full memorial record. Donald E. Knowlton is highlighted in Aug.

Jan
1,392
Feb
1,295
Mar
1,373
Apr
1,516
May
1,504
Jun
1,442
Jul
1,587
Aug
1,517
Sep
1,491
Oct
1,371
Nov
1,447
Dec
1,624

Weapons Used Against Officers

Most common weapons in felonious officer deaths. Donald E. Knowlton was killed by shotgun.

Handgun
3,684
Gun
3,592
Gun; Unknown type
1,492
Shotgun
1,109
Rifle
935
Officer's handgun
909

Incident Location