After the death of their father, George Albert I and his surviving elder half-brothers divided the Erbach domains in 1606: he received the districts of Schönberg and Seeheim.
[1] In 1623, after the death of his eldest half-brother Frederick Magnus without surviving issue, the remaining brothers divided his domains: George Albert I received the district of Reichenberg.
In 1627, with the death of another half-brother, John Casimir, unmarried and without issue, was made another land division; this time George Albert I received Fürstenau.
Finally, the death of his last surviving half-brother Louis I in 1643 without living sons, allowed George Albert I to reunite all the Erbach family possessions.
In Erbach on 29 May 1624 George Albert I married firstly with Magdalena (13 November 1595 – 31 July 1633), a daughter of Johann VI, Count of Nassau-Dillenburg and his third wife Johannetta of Sayn-Wittgenstein.