AMBROSE D. BARNETT, son of John P. Barnett (native of Culpepper County, Virginia), was born in Nicholas Co, Kentucky on 24 July 1809. He located in Johnson County, Indiana about 1821; married Sophronia Riggs, 03 May 1839 in Johnson County, Indiana; had nine children:

The family moved to Hamilton County, Indiana about 1853, but returned to Johnson County in 1864 and located near Nineveh. Ambrose died 20 May 1885. His wife and seven children were still living when Banta's History of Johnson County, Indiana was published in 1888.

Above from personal research, other researchers, Banta's History.

Banta, D.D. History of Johnson County, Indiana. Chicago, IL: Brant & Fuller, 1888.