Caroline County, Virginia Caroline County, Virginia Caroline County is a United States county located on the eastern part of the Commonwealth of Virginia. The northern boundary of the county borders on the Rappahannock River, notably at the historic town of Port Royal. The Caroline county seat is Bowling Green. Caroline County was established in 1728 and was named in honor of Caroline of Ansbach, wife of the then reigning king, George II of Great Britain. It is the birthplace of the renowned racehorse Secretariat, winner of the 1973 Kentucky Derby, Preakness Stakes and Belmont Stakes; the Triple Crown. As of the 2010 census,
Frederick I, Margrave of Brandenburg-Ansbach denied entry to Plassenburg Castle. The dispute was finally cleared when an agreement was reached in 1522, in which the demands of the younger sons of Frederick were met. On 14 February 1479, at Frankfurt (Oder), Frederick I was married to Princess Sophia of Poland (6 April 1464 – 5 October 1512), daughter of King Casimir IV of Poland by his wife Elisabeth of Austria, and sister of King Sigismund I of Poland. They had seventeen children: Frederick I, Margrave of Brandenburg-Ansbach Frederick I of Ansbach and Bayreuth (also known as Frederick V; or ; 8 May 1460 – 4