William O'brien (1836–1863)
Quick facts
- Born
- 1836
- Died
- 1863 in Harpers Ferry, VA
- Source
- Names in Stone
When was William O'brien born? 1836.
When did William O'brien die? 1863 in Harpers Ferry, VA.
Life story
William O'brien (1836–1863) was born in 1836, and died in 1863 in Harpers Ferry, VA, at about age 27. A cemetery record documents William's grave. Source: Names in Stone. AncestryData does not yet have further details about William's life.

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The world William lived through
1845 · age 9 — The Irish Potato Famine began
1846 · age 10 — The Mexican–American War began
1848 · age 12 — The California Gold Rush began
1861 · age 25 — The American Civil War began
1863 · age 27 — The Emancipation Proclamation took effect
Questions about William O'brien
When was William O'brien born?
William O'brien was born in 1836.
When did William O'brien die?
William O'brien died in 1863 in Harpers Ferry, VA.
Where did William O'brien die?
William O'brien died in Harpers Ferry, VA.
How old was William O'brien at the time of death?
William O'brien was about 27 years old.
Where is William O'brien buried?
A cemetery record from Names in Stone documents William's grave; see the source link on this page for the cemetery map.
Who was president when William O'brien was born?
Andrew Jackson was president of the United States when William was born.
Who was president when William O'brien died?
Abraham Lincoln was president of the United States when William died.
What major events happened during William O'brien's lifetime?
During William's lifetime: the Irish Potato Famine began (1845, age 9); the Mexican–American War began (1846, age 10); the California Gold Rush began (1848, age 12); the American Civil War began (1861, age 25); the Emancipation Proclamation took effect (1863, age 27).
Which U.S. censuses would include William O'brien?
Federal censuses taken during William's lifetime and now public: 1840, 1850, 1860.
Census years to search
Life events
Birth
1836
Death
1863
Harpers Ferry, VA
Burial
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Cite this record
AncestryData, "William O'brien (1836–1863)," record page, https://www.ancestrydata.com/person/william-o-brien-1836-1863-b0fa2a83/, accessed 2026-11-14.
https://www.ancestrydata.com/person/william-o-brien-1836-1863-b0fa2a83/
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