Not my family line, just sharing.
A response to my posting in the Brannan Forum, which I incorrectly entered as John H. Brannan, Marsha Vedder gave the maiden name of John W. Brannan's mother as Rachel Brown.
See this link:
From the book "HISTORY AND BIOGRAPHY, COUNTIES OF WHITE AND PULASKI INDIANA. Historical and Biographical. Illustrated. Chicago; F. A. Battey & CO., Publishers. 1883."
page 358, Monon Township, White County, Indiana
"JOHN W. BRANNAN was born in Perry County, Ohio, November 2, 1841, and is a son of ADAM and RACHEL BRANNAN, who came to this township and purchased a farm when JOHN W. was but four years of age. After two years, his father died. JOHN W. attended school and worked on the farm until 1861, when, at the sound of war, he enlisted in Company K, Twentieth Indiana Volunteer Infantry. He took part in the engagement between the Monitor and Merrimac, at second Bull Run, Fredericksburg, Chancellorsville, and in the first battles of the Wilderness. He was discharged in July, 1864. On October 26, 1865, he married LOUISA J. LINE, daughter of DAVID LINE, to which union were born three children - CHARLES S. (April 24, 1866), NANCY A., deceased (November 4, 1867), and WILLIAM D., deceased (October 2, 1871). MRS. BRANNAN died December 27, 1872. She was a member of the M. E. Church. March 17, 1874, MR. BRANNAN married MARY E. DUNLOP, widow of JOHN DUNLOP, by whom he had four children - ALICE M. (born February 17, 1875), HARVEY H. (October 17, 1876), CLYDE M. (December 10, 1878), and IRA O., deceased (January 18, 1883). MR. BRANNAN has a fine farm of 200 acres, well improved and cultivated. He is a general farmer, but raises some stock. He is a member of the G.A.R. He belongs to the M. E. Church and his wife to the Presbyterian."