He is married to Anna Helena Philippa Wambolt van Umstadt.
They got married on May 10, 1677, he was 26 years old.
Child(ren):
Bron:
Geschlechts-Register Der Reichs Frey unmittelbaren Ritterschafft Landes zu Francken Löblichen Orts Ottenwald, Tabula CCCXXVII
https://books.google.nl/books?id=pNJDAAAAcAAJ&pg=PR327&lpg=PR327&dq=Johann+Philipp+Ernst+Groschlag+Dieburg&source=bl&ots=tbRAm3_HL4&sig=Vf0Iae_Qnkyi8fwnm8asAUizTcA&hl=nl&sa=X&ved=0CDUQ6AEwA2oVChMI7s6pmMrbxwIVwpZyCh1aSgKW#v=onepage&q=Johann%20Philipp%20Ernst%20Groschlag%20Dieburg&f=false
The data shown has no sources.