In 1576, he studied at the University of Heidelberg. In 1578, he went to the Netherlands, to serve in the army, under Count of Günther XLI of Schwarzburg-Arnstadt. While in the Netherlands, he tried to be elected Bishop of Utrecht, but failed. From 1580, he attended the court of Margrave George Frederick of Brandenburg-Ansbach-Kulmbach.
In 1604, he purchased his first territory, the district and city of Driedorf from his father. After his father died in 1606, George and his brothers decided to divide Nassau-Dillenburg. When this division was implemented in 1607, William Louis received Nassau-Dillenburg; John VII received Nassau-Siegen; Ernst Casimir received Nassau-Diez; John Louis received Nassau-Hadamar and George received
Nassau-Beilstein, which included the Lordships of Westerwald, Burbach and Hickengrund. In 1611, he purchased the Nassau share of the district of Wehrheim, which Nassau shared with Trier, from his brother John VII.
Until 1612, George resided in Dillenburg, as regent for his absent brother William Louis, who was in Holland. After his brother returned, George moved into Beilstein Castle, in his own territory.
In 1618, George reached an agreement with his brother John VII, in which John ceded to George the right to inherit Dillenburg if William Louis were to die childless. This came to happen in 1620. So George moved back to Dillenburg and became the founder of the younger Nassau-Dillenburg line. Nassau-Beilstein was divided, with George keeping Burbach and Hickengrund.
He ruled his territory well; like his brothers he issued court regulations, administrative and law enforcement regulations.
Louis Henry (1594–1662), Count of Nassau-Dillenburg jointly with Albert from 1623 to 1626 and alone from 1626 until his death; raised to Prince in 1654
Wolfgang Philip (b. 1595)
Albert (1596–1626), ruled Nassau-Dillenburg jointly with Louis Henry from 1623 until his death in 1626