Question: Which country Prince Karl Anton August Of Schleswig-Holstein-Sonderburg-Beck's father is from?

Knowledge 1: Prince Karl Anton August of Schleswig-Holstein-Sonderburg-Beck
Prince Karl Anton August of Schleswig-Holstein-Sonderburg-Beck (10 August 1727, in Marburg – 12 September 1759, in Stettin) was the son of Peter August, Duke of Schleswig-Holstein-Sonderburg-Beck and Princess Sophie of Hesse-Philippsthal. [SEP] Knowledge 2: Peter August, Duke of Schleswig-Holstein-Sonderburg-Beck
Peter August Friedrich, Duke of Schleswig-Holstein-Sonderburg-Beck (7 December 1697 – 22 March 1775) was a Duke of Schleswig-Holstein-Sonderburg-Beck.He was the fifth and youngest son of Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck and his wife Duchess Louise Charlotte of Schleswig-Holstein-Sonderburg-Augustenburg.Born in Königsberg, Brandenburg-Prussia, Peter August became Governor General of Reval (Tallinn), Governor of Estonia, and a Field Marshal in the Russian Imperial Army.He died in Reval.He was only the "titular" duke, because he did not inherit the domain of Beck.It had been inherited by his father's older brother, Duke August (1652–1689), and nephew Frederick William I (1682–1719), and was then sold by the latter's widow to Peter August's older brother, Duke Frederick William II (1687–1749), in 1732.But he re-sold it in 1745 to Baroness Magdalena von Ledebur-Königsbrück.Thus, by the time that Peter August became the head of this cadet branch of the Danish royal dynasty, he was "Duke of Schleswig-Holstein-Sonderburg-Beck" in name only.He is the male line ancestor of Margrethe II of Denmark, Harald V of Norway and Charles, Prince of Wales.
Knowledge 1: Peter August, Duke of Schleswig-Holstein-Sonderburg-Beck
Peter August Friedrich, Duke of Schleswig-Holstein-Sonderburg-Beck (7 December 1697 – 22 March 1775) was a Duke of Schleswig-Holstein-Sonderburg-Beck.He was the fifth and youngest son of Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck and his wife Duchess Louise Charlotte of Schleswig-Holstein-Sonderburg-Augustenburg.Born in Königsberg, Brandenburg-Prussia, Peter August became Governor General of Reval (Tallinn), Governor of Estonia, and a Field Marshal in the Russian Imperial Army.He died in Reval.He was only the "titular" duke, because he did not inherit the domain of Beck.It had been inherited by his father's older brother, Duke August (1652–1689), and nephew Frederick William I (1682–1719), and was then sold by the latter's widow to Peter August's older brother, Duke Frederick William II (1687–1749), in 1732.But he re-sold it in 1745 to Baroness Magdalena von Ledebur-Königsbrück.Thus, by the time that Peter August became the head of this cadet branch of the Danish royal dynasty, he was "Duke of Schleswig-Holstein-Sonderburg-Beck" in name only.He is the male line ancestor of Margrethe II of Denmark, Harald V of Norway and Charles, Prince of Wales. [SEP] Knowledge 2: Louis Charles, Duke of Schleswig-Holstein-Sonderburg-Franzhagen
Louis Charles, Duke of Schleswig-Holstein-Sonderburg-Franzhagen (4 June 1684 – 11 October 1707) was a German nobleman.He was the second son of Duke Christian Adolph of Schleswig-Holstein-Sonderburg and his wife, Duchess Eleonora Charlotte of Saxe-Lauenburg.In 1707, he succeeded his elder brother Leopold Christian as Duke of Schleswig-Holstein-Sonderburg-Franzhagen.However, he died later that year.He was married to Anna Dorothea of Winterfeld.They had two children together:
His son Christian Adolph succeeded as Duke of Schleswig-Holstein-Sonderburg-Franzhagen.With his death in 1709, the Schleswig-Holstein-Sonderburg-Franzhagen line died out.
Knowledge 1: Prince Karl Anton August of Schleswig-Holstein-Sonderburg-Beck
Prince Karl Anton August of Schleswig-Holstein-Sonderburg-Beck (10 August 1727, in Marburg – 12 September 1759, in Stettin) was the son of Peter August, Duke of Schleswig-Holstein-Sonderburg-Beck and Princess Sophie of Hesse-Philippsthal. [SEP] Knowledge 2: Louis Charles, Duke of Schleswig-Holstein-Sonderburg-Franzhagen
Louis Charles, Duke of Schleswig-Holstein-Sonderburg-Franzhagen (4 June 1684 – 11 October 1707) was a German nobleman.He was the second son of Duke Christian Adolph of Schleswig-Holstein-Sonderburg and his wife, Duchess Eleonora Charlotte of Saxe-Lauenburg.In 1707, he succeeded his elder brother Leopold Christian as Duke of Schleswig-Holstein-Sonderburg-Franzhagen.However, he died later that year.He was married to Anna Dorothea of Winterfeld.They had two children together:
His son Christian Adolph succeeded as Duke of Schleswig-Holstein-Sonderburg-Franzhagen.With his death in 1709, the Schleswig-Holstein-Sonderburg-Franzhagen line died out.

Answer: Prussia