US NAVY
Mark J Brennan
October 15, 1951—May 14, 2021
PN2
Life Timeline
69 years1951
Born
October 15, 1951
US NAVY
Service Record
PN2
2021
Passed Away
May 14, 2021
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
Rank
PN2
Sourced from official cemetery data; last updated May 30, 2026.Learn more