Son Jacob is the only child who has been found in the 1880 census. See the 1880 census event for Jacob. There he states his mother was born in Iowa. That seems rather doubtful since the family came to Indiana from Tennessee, unless David had an even earlier marriage by which he had Campbell and Charity, moved to Indiana and married for a second time to someone born in Iowa and had Jacob, Louisa and Jefferson, and then married for a third time to Anna. I think it is more likely the 1880 census is incorrect as to the state of her birth, just as it is with respect to the state of David's birth.
Tombstone reads "Elizabeth Bower 1806-1844, wife of David"
Elizabeth married David BOWERS, son of Andrew BOWER (Sr.) and Catherine, on 11 Oct 1825 in Grainger County, Tennessee.1 3 (David BOWERS was born in 1805-1806 in probably Grayson County, Virginia,4 5 6 died on 17 Aug 1869 in Shelby County, Indiana 7 and was buried in Blue River Cemetery, Shelby County, Indiana 3.)
David Bower and Elizabeth Dennis were married on 11 Oct 1825 by Thomas Brown, J.P. Bondsman per bond dated 8 Oct 1825 was William T. Carden. 1
1 Loose Marriage Records, Grainger County, Tennessee, 1796-1950 (Organized and Indexed by the Grainger County Archives, Rutledge, Tennessee, 2006), Page 53 of 736.
2 Family Records of Carl and Donna Hart, citing tombstone reading. Carl is a descendant of David Bowers and his second wife, Anna Myer Headlee, by way of their daughter, Emily, and her second husband, William M. Sanford. Those interested in this line can contact Carl and/or Donna at email@example.com.
3 Family Records of Carl and Donna Hart, citing tombstone reading.
4 1850 Census, Shelby County, Indiana, FHL Film No. 442,950, Page 391 (Marion Twp, Dwelling 113, Family 117).
5 1860 Census, Shelby County, Indiana, FHL Film No. 803,296, Page 731 (Marion Twp, Dwelling 746, Family 750).
6 Grayson County, Virginia, Personal Property Tax Books, 1794-1807, 1809-1850, FHL Film No. 2,024,555. 1827 is the end of this reel of film.
Probate Court File of David Bowers Estate, Box 92, Shelby County, Indiana. There is an online transcription of this file at http://www.rootsweb.com/~inshelby/courthouse/estate_records/est_bowersd.html.