Papers pertaining to Martin A. O’Brennan, an Irish nationalist activist, lawyer, newspaper editor, and amateur historian. The papers document O’Brennan’s Irish activities and his life in Chicago through correspondence and documents, manuscript copies of his speeches, printed pamphlets and copies of newspapers (both the Connaught Patriot and the Irish News), and ephemera-like advertisements, prospectuses, membership cards and printed lecture tickets.

Material relating to the genealogy of Richard Colles Johnson’s family, especially his Colles ancestors and relations, including correspondence, clippings, copies of documents and publications, memorabilia, and photographs.