Not my family line, just sharing.
D. W. (Dennis W.) is a brother to W.(William) R. Brown.
The following Biographical sketch was copied from the book "HISTORY AND BIOGRAPHY COUNTIES OF WHITE AND PULASKI, INDIANA. Historical and Biographical. Illustrated. Chicago; F.A. Battey & Co., Publishers. 1883.
page 734, Van Buren Township, Pulaski County, Indiana.
"D. W. BROWN was born in Preble County, Ohio, January 2, 1824, and is one of nine children - ANSON, MARY, JOHN A., WILLIAM R., DENNIS W., HESTER, ISRAEL, LEVI H., and PHEBE A. - born to MERCER and NANCY BROWN. The father was born about 1792, and was the son of Richard Brown, who was born in Georgia, and was the father of ten children, of whom five were sons - MERCER, WILLIAM, JOHN, RICHARD and JONATHAN. In 1845, D. W. BROWN came to this county, and went to farming in Indian Creek Township on land given to him by his father. March 15, 1846, he married MISS HANNAH BURTON, who was born in Fairfield COunty, Ohio, November 28, 1829. In 1856, he moved to Royal Centre, Cass County, Indiana, and then came to Winamac, Monroe Township, Pulaski County, Indiana, where he was engaged in mercantile business for about two years. He next purchased the 217 acres on which he now resides. In September, 1864, he enlisted in Company D, Twenty-third Indiana Volunteer Infantry, and served until the close of the war. There have been born to him eight children, named as follows: MERCER L., JOHN W., EVA J., IDA A., CHARLIE D., VAN B., WESLEY D. (deceased) and CATHERINE (deceased)."