He is married to Maria Anna Elisabeth van Holnstein.
They got married on February 25, 1779, he was 20 years old.
Bron:
Gothaisches genealogisches Taschenbuch der freiherrlichen Häuser: 1861, Perthes, 1861, Pag. 315
https://books.google.nl/books?id=rEtNAAAAcAAJ&pg=PA315&dq=anton+alois+Horneck+hornberg+1758&hl=nl&sa=X&ved=0ahUKEwiHoab9iNbRAhWDDxoKHcYyB38Q6AEIIzAA#v=onepage&q=anton%20alois%20Horneck%20hornberg%201758&f=false
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