Casey Mannion (born 1821) was an Irish-American soldier who served in the Union Army's 17th Michigan Infantry Regiment during the American Civil War. He fought at the Battle of Antietam in September 1862.
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Casey Mannion (born 1821) was an Irish-American soldier who served in the Union Army's 17th Michigan Infantry Regiment during the American Civil War. He fought at the Battle of Antietam in September 1862.