George Albert III, Count of Erbach-Fürstenau
George Albert III, Count of Erbach- Fürstenau( 14 June 1731 – 2 May 1778), was a member of the German House of Erbach who held the fiefs of Fürstenau, Michelstadt and Breuberg.
Born in Fürstenau, he was the sixth child and third( but second surviving) son of Philipp Charles, Count of Erbach- Fürstenau and his second wife Anna Sophie, a daughter of Kaspar, Baron of Spesshardt in Unsleben and Mupparg.
George August, Count of Erbach-Schönberg
George August was the Count of Erbach- Schönberg and lived from 1691 to 1758.
He was the youngest son of George Albert II, Count of Erbach- Fürstenau to reach adulthood.
George IV, Count of Erbach-Fürstenau
George IV, Count of Erbach- Fürstenau( 12 May 1646 – 20 June 1678), was a member of the German House of Erbach who held the fiefs of Fürstenau, Michelstadt, Reichenberg, Bad König and Breuberg.
Born in Hanau, he was the eighth child and fifth( but third surviving) son of George Albert I, Count of Erbach-Schönberg and his third wife Elisabeth Dorothea, a daughter of George Frederick II, Count of Hohenlohe- Waldenburg in Schillingsfürst.
George Albert II, Count of Erbach-Fürstenau
George Albert II, Count of Erbach- Fürstenau( 26 February 1648 – 23 March 1717), was a member of the German House of Erbach who held the fiefs of Fürstenau, Schönberg, Seeheim, Reichenberg and Breuberg.
Born in Fürstenau, he was the ninth child and sixth( but fourth surviving) son of George Albert I, Count of Erbach- Schönberg and his third wife Elisabeth Dorothea, a daughter of George Frederick II, Count of Hohenlohe- Waldenburg in Schillingsfürst.
He was born three months after his father's death, on 25 November 1647.
Philipp Charles, Count of Erbach-Fürstenau
Philipp Charles, Count of Erbach- Fürstenau( 14 September 1677 – 2 June 1736), was a member of the German House of Erbach who held the fiefs of Fürstenau, Michelstadt and Breuberg.
Born in Schönberg, he was the third child and second( but eldest surviving) son of George Albert II, Count of Erbach- Fürstenau and Anna Dorothea Christina, a daughter of Count Philipp Gottfried of Hohenlohe- Waldenburg.
Frederick Magnus, Count of Erbach-Fürstenau
Frederick Magnus, Count of Erbach- Fürstenau( 18 April 1575 – 26 March 1618), was a German prince member of the House of Erbach and ruler over Fürstenau and Reichenberg.
Born in Erbach, he was the third child and second( but eldest surviving) son of George III, Count of Erbach- Breuberg and his second wife Anna, a daughter of Frederick Magnus, Count of Solms- Laubach- Sonnenwalde.
He was named after his maternal grandfather.
George Albert I, Count of Erbach-Schönberg
George Albert I, Count of Erbach- Schönberg( 16 December 1597 – 25 November 1647), was a German prince member of the House of Erbach and ruler over Schönberg, Seeheim, Reichenberg, Fürstenau and since 1643 over all the Erbach family lands.
Born in Erbach, he was the fourth child and second( but eldest surviving) son of George III, Count of Erbach-Breuberg and his fourth wife Maria, a daughter of Count Albert X of Barby- Mühlingen.
Johann William, Count of Erbach-Fürstenau
Johann William, Count of Erbach- Fürstenau( 13 February 1707 – 1 August 1742), was a member of the German House of Erbach who held the fiefs of Fürstenau, Michelstadt and Breuberg.
Born in Hanau, he was the fourth child and only son of Philipp Charles, Count of Erbach- Fürstenau and his first wife Caroline Amalie, a daughter of Johann Dietrich, Count of Kunowitz.
Frederick Augustus, Count of Erbach-Fürstenau
Frederick Augustus, Count of Erbach- Fürstenau( 5 May 1754 – 12 March 1784), was a member of the German House of Erbach who held the fiefs of Fürstenau, Michelstadt and Breuberg.
Born in Schloss Fürstenau, Michelstadt, he was the eldest child of George Albert III, Count of Erbach- Fürstenau and Josepha Eberhardine, a daughter of Christian, Prince of Schwarzburg- Sondershausen- Neustadt.
Louis II Frederick Charles Eginhard, Count of Erbach-Fürstenau
Louis II Frederick Charles Eginhard, Count of Erbach- Fürstenau( 12 May 1728 – 16 January 1794), was a member of the German House of Erbach who held the fiefs of Fürstenau, Michelstadt and Breuberg.
Born in Fürstenau, he was the fourth child and second( but eldest surviving) son of Philipp Charles, Count of Erbach- Fürstenau and his second wife Anna Sophie, a daughter of Kaspar, Baron of Spesshardt in Unsleben and Mupparg.

Question: Who is George Iv, Count Of Erbach-Fürstenau's paternal grandfather?