US NAVY
Mary Ann O'Brien
December 5, 1928—July 14, 2015
LTJG
Life Timeline
86 years1928
Born
December 5, 1928
US NAVY
Service Record
Korean War
Korean War
Conflict
LTJG
2015
Passed Away
July 14, 2015
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
Rank
LTJG
War / Conflict
Korean War
Sourced from official cemetery data; last updated May 30, 2026.Learn more