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COMMANDER // 1834–1878

John O'Neill

United States2 battles1 war

Lifespan

1834 – 1878

1840185018601870Fenian raids · 1866-1871Battle of Ridgeway — June 2, 1866 · Fenian Brotherhood · Fenian raidsBattle of Eccles Hill — May 25, 1870 · Fenian Brotherhood · Fenian raids

Active service 1866–1870 — 2 battles across 1 war; first command at age 32.

Profile

John Charles O'Neill was an Irish-born officer in the American Civil War and member of the Fenian Brotherhood. O'Neill is best known for his activities leading the Fenian raids on Canada in 1866 and 1871.

Source · Wikipedia · Q6250978

Battles (2)

Last verified June 2026
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