DUNN, John O., (son of Sergeant at Arms Thomas Dunn), a Sergeant at Arms from the District of Columbia; born in October 1801; Assistant Doorkeeper, United States House of Representatives; elected to fill the vacancy caused by the death of Thomas Dunn, (December 6, 1824–December 3, 1833); died on March 14, 1848, in Reynosa, Mexico.
Elected to full the vacancy caused by the death of Thomas Dunn, House Journal, 18th Cong., 2nd sess., (December 6, 1824): 8.
History, Art & Archives, U.S. House of Representatives, “DUNN, John O.,” https://history.house.gov/People/Listing/D/DUNN,-John-O-/ (September 23, 2020)
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