He server in the imperial army and lived mostly in Vienna. This marriage remained childless. In 1612, he acquired Haag-Schlössle Castle in Haigerloch, where his widow would live after his death.
His father had started the construction of the castle church.
During Johann Christoph"s reign, it was completed. The church was consecrated in 1609.
When the Thirty Years" War broke out in 1618, Johann Christoph was selected as commander of Hohenzollern Castle. Johann Christoph died in 1620.