Statistics for occurrence #1 of “O'Brien, Darby” in chapter 109 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1, Mass. officers and men who died.:

...H.,21st Mass. Inf.,Petersburg Mine, Va.,July 30, 1864. Newton, Amos P.,57th Mass. Inf,North Anna River, Va.,May 24, 1864. Nutting, George G., 1st Lieut.,53d Mass. Inf.,Bisland, La.,April 13, 1863. O'Brien, Darby ,57th Mass. Inf.,Petersburg, Va.,July 5, 1864. O'Connell, John J.,2d Mass. Inf.,Winchester, Va.,May 25, 1862. O'Connor, Daniel,57th Mass. Inf.,Spotsylvania, Va.,May 12, 1864. Name an...
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