US MARINE CORPS
William O'Neill
July 19, 1935—April 13, 2005
CPL
Life Timeline
69 years1935
Born
July 19, 1935
US MARINE CORPS
Service Record
Korean War
Korean War
Conflict
CPL
2005
Passed Away
April 13, 2005
Service Record
Verified fields from cemetery source data.
Branch
US MARINE CORPS
Rank
CPL
War / Conflict
Korean War
Sourced from official cemetery data; last updated May 30, 2026.Learn more