He is married to Arnolda van Loon.
They got married on May 1, 1811 at Tilburg, Noord Brabant, Nederland, he was 26 years old.Source 3
http://www.regionaalarchieftilburg.nl/zoeken-in-databases/genealogie/resultaten/weergave/register/layout/blader/id/7cf948c2-385a-11e0-bcd1-8edf61960649?persoon=Nicolaus+de+Cock+29-06-1784&tmpl=blader
http://www.regionaalarchieftilburg.nl/zoeken-in-databases/genealogie/resultaten/weergave/register/layout/blader/id/dda89a28-3856-11e0-bcd1-8edf61960649?image=5a18256a-0605-c6a9-d148-8a08968d3cb2&persoon=Nicolaas+de+Cock+12-09-1873+Aktenummer+504&tmpl=blader
http://www.regionaalarchieftilburg.nl/zoeken-in-databases/genealogie/resultaten/weergave/register/layout/blader/id/cc5083c4-3858-11e0-bcd1-8edf61960649?image=71b8407f-cb91-25fd-1f2b-b0ed56535f8e&persoon=Nicolaas+de+Cock+01-05-1811+Aktenummer+30&tmpl=blader