Education
Dunn attended school in the first schoolhouse in Hanover.
He subsequently studied law .
congressman judge advocate officer
Dunn attended school in the first schoolhouse in Hanover.
He subsequently studied law .
He was admitted to the bar in 1837.
He was a delegate to the state constitutional convention in 1850. He was an unsuccessful candidate for reelection in 1862 to the Thirty-eighth Congress.
Following the Civil War, Dunn stayed in the Regular Army. He was promoted to brigadier general and Judge Advocate General on December 1, 1875. He retired from the army on January 22, 1881.