Frederick Ambrose 
Frederick was born in 1781 in Berkeley County, Virginia.1 Frederick's father was William Henry Ambrose and his mother is Sarah. He had nine brothers and two sisters, named Mathias, William, Peter, Henry, Philip, John, Jacob, Daniel, Solomon, Peggy and Catherine. He was the fourth youngest of the twelve children. He died at the age of 68 on June 12th, 1849 in Urbana, Champaign County, Ohio.2 General Notes
According to "Howe's Historical Collection of Ohio" by Henry Howe, he was one of the first settlers in Champaign County. The History of Champaign County says he came to Ohio in 1799. He settled on the Mad River, in what later became Champaign County. When Urbana was later laid out, he moved to town and started a pottery. He also engaged in the mercantile business, was quite active in local politics, and served as one of the early sheriffs of the county, from 1821 to 1825 and 1833 to 1847. He was listed as an Elector for Champaign County, 8 Oct 1811; no. 22 in a list of 87 voters. He was also elected Treasurer of the County from 1840 to 1847. He and and his first wife, Jennie, had nine children, but only four have been found.
In Chancery Records for Champaign Co. Vol. 1, there are 11 references to Frederick Ambrose. No other Ambrose is named. The early references are to service on the grand or petit jury. In 1833 Frederick Ambrose was appointed guardian ad litem for the Hanback children [pg. 78]; and for the Taylor children [pg. 80]; also for Lung children [pg 92]. Frederick Ambrose admin. of Alexander Allen vs.. Sally Allen et al. Has to do with selling of a lot owned by Alexander Allen. In 1838 Frederick Ambrose admin. of Wm. Winsor deceased v. Hannah Weldon et al. Again, having to do with lot in Urbana.
Details of Frederick's family with Jane "Jennie" Tanner
Details of Frederick's family with Mary Ann Poff
1 James Veregge, Descendants of Caleb Ambrose (Las Palma, CA, 1999)
2 Carol Tillman
Further sources/citations:
Ruth Ambrose Stennett, Ambrose, Kapp, and branch lines dating from their 1770s immigrations to 1990, Judge Evan P. Middleton, History of Champaign County, Ohio, Vol. II, pp 150-152 (Indianapolis, Indiana: B. F. Bowen & Company, Inc., 1917), Anita Fiedler, U.S. Federal Census
2 Carol Tillman
Further sources/citations:
Ruth Ambrose Stennett, Ambrose, Kapp, and branch lines dating from their 1770s immigrations to 1990, Judge Evan P. Middleton, History of Champaign County, Ohio, Vol. II, pp 150-152 (Indianapolis, Indiana: B. F. Bowen & Company, Inc., 1917), Anita Fiedler, U.S. Federal Census