In August 1689, after he had visited his brother in Breslau and his sister in Vienna, Philip William began his Grand Tour to Italy.

He died at the age of 24 after suffering for seven days from a "malignant fever" and was buried in the parish church of Zákupy.

He married on 29 October 1690 in Raudnitz Anna Maria Franziska (1672–1741), a daughter of Duke Julius Francis of Saxe-Lauenburg.

The wedding ceremony, which had to be postponed due to the illness and death of Philip William August's father, was carried out "plainly".

His marriage brought Philipp Wilhelm August the following children: This article about a member of the German nobility is a stub.