Mary O'brien (?–1865)
Quick facts
- Died
- 1865
- Source
- Names in Stone
When did Mary O'brien die? 1865.
Life story
Mary O'brien (?–1865) died in 1865. A cemetery record documents Mary's grave. Source: Names in Stone. AncestryData does not yet have further details about Mary's life.

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Questions about Mary O'brien
When did Mary O'brien die?
Mary O'brien died in 1865.
Where is Mary O'brien buried?
A cemetery record from Names in Stone documents Mary's grave; see the source link on this page for the cemetery map.
Who was president when Mary O'brien died?
In 1865, the U.S. presidents were Abraham Lincoln and Andrew Johnson.
Life events
Death
1865
Burial
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Cite this record
AncestryData, "Mary O'brien (?–1865)," record page, https://www.ancestrydata.com/person/mary-o-brien-1865-3362cc1c/, accessed 2026-11-15.
https://www.ancestrydata.com/person/mary-o-brien-1865-3362cc1c/
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