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Incident
Detective Mancusi was killed when the patrol car he was riding in struck a parked truck. He and the Police Chief of Mamaroneck Police Department were traveling from Milford, Connecticut where they were questioning a burglary suspect. At 4 AM, they were traveling through Stamford, Connecticut when they crested a hill and struck a truck that was parked along the side of the road. The accident investigation determined the Mamaroneck Police Chief, who was driving, could not see the parked truck due to dirt obstructing the reflectors. Detective Mancusi and the Mamaroneck Police Chief had traveled to Milford, Connecticut where a suspect was being held for burglary. The burglaries had similarities to burglaries that had occurred in New Rochelle and Mamaroneck. Detective Mancusi was survived by his wife, two daughters, three sons, a sister and four brothers. Detective Mancusi has been commended sixteen separate times during his career with the New Rochelle Police Department. He had also served as a police officer with the New Haven Railroad Police.
Survivors
Detective Mancusi was survived by his wife, two daughters, three sons, a sister and four brothers.
In Our Keeping
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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.
Detective Mancusi gave the New Rochelle Police Department 12 years.
Thank you for your service to the New Rochelle community. Gone but never to be forgotten.
Rest easy, Detective Mancusi.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
The Sacrifice · Accident
New Rochelle Police Department has lost 10 officers; 6 of them lost to accidents.
William is one of 641 officers lost to accidents in NY, 30.1% of the 2,132 remembered there.
William is one of 8,275 officers lost to accidents in the United States, 30% of the 27,551 remembered there.
William is one of 10,100 officers lost to accidents worldwide, 29.6% of the 34,117 remembered here.
34,117 officers are remembered on this memorial. Each number below is one of them.
Time
In 1934, 1 officer at New Rochelle Police Department was lost to accidents, the 2nd heaviest of 5 years on record. The heaviest was 1930, with 2.
In 1934, 7 officers in NY were lost to accidents, the 24th heaviest of 137 years on record. The heaviest was 1930, with 24.
In 1934, 91 officers in the United States were lost to accidents, the 12th heaviest of 174 years on record. The heaviest was 1929, with 118.
In 1934, 101 officers worldwide were lost to accidents, the 18th heaviest of 200 years on record. The heaviest was 1930, with 131.
Who
William was 41. Of the 6 lost to accidents at New Rochelle Police Department whose age is recorded, half were between 37.5 and 42.5; the middle age was 40. William had served 12 years; the middle length of service was 12.5 years.
William was 41. Of the 575 lost to accidents in NY whose age is recorded, half were between 30 and 44; the middle age was 37. William had served 12 years; the middle length of service was 8 years.
William was 41. Of the 7,718 lost to accidents in the United States whose age is recorded, half were between 29 and 46; the middle age was 36. William had served 12 years; the middle length of service was 6 years.
William was 41. Of the 9,451 lost to accidents worldwide whose age is recorded, half were between 29 and 45; the middle age was 36. William had served 12 years; the middle length of service was 6 years.
When
July holds 16.7% of these deaths at New Rochelle Police Department; September holds the most, 33.3%. Fridays: 33.3%.
July holds 10% of these deaths in NY; October holds the most, 10.3%. Fridays: 14.5%.
July holds 9.3% of these deaths in the United States; August holds the most, 9.5%. Fridays: 15.1%.
July holds 8.9% of these deaths worldwide; August holds the most, 9.3%. Fridays: 15%.
How
Accident deaths account for 60% of all 10 deaths at New Rochelle Police Department, the most common cause.
Accident deaths account for 30.1% of all 2,132 deaths in NY, the 2nd most common cause.
Accident deaths account for 30% of all 27,551 deaths in the United States, the 2nd most common cause.
Accident deaths account for 29.6% of all 34,117 deaths worldwide, the 2nd most common cause.
His people
New Rochelle Police Department has 10 officers remembered here, William among them.
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Maurice Ahearn
Jun 20, 1903
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Thomas L. Payne
Sep 23, 1929
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Daniel F. Murphy
Apr 25, 1930
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Timothy Mahoney
May 5, 1930
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William E. Mancusi
Jul 20, 1934
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Allen Bruce McLeod, Sr.
Feb 14, 1977
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John C. Phillips
Oct 1, 1981
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Gary D. Pagano
Sep 14, 1982
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Kathleen O'Connor-Funigiello
Aug 16, 2018
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Mark S. Gado
Sep 16, 2018
Where the Name Is Cut
National Law Enforcement Officers Memorial · Panel 45-E
What is kept
Photographs, film, sound and papers — what survived a life.
Others Who Wore This Badge
9 officers from New Rochelle Police Department are honored on badge.nw.
