He is married to Maria van Aken.
Permission for the marriage has been obtained in Haarlem (Noord-Holland) on November 29, 1789.Source 1
They were married in church on December 13, 1789 at Haarlem (Noord-Holland).Source 11789
Den 29 November
Hendrik Hermans Wednr. van Haarlem
woon. in de Warmoesstraat
met
Maria van Aken Wed.e van Pieter Wijk
huizen van Haarlem op den Koudenhorn
G. Jan Christoffel Bierbrauwer
zijnde op den 13 dec.
1789 Alhier getrout
"Netherlands, Noord-Holland Province, Church Records, 1523-1948," images, FamilySearch, Nederlands Hervormde > Haarlem > Trouwen 1756-1812 > image 543 of 677; Nederlands Rijksarchiefdienst, Den Haag (Netherlands National Archives, The Hague).
Link: https://familysearch.org/ark:/61903/3:1:3QS7-89QV-B9WX-T?cc=2037985&wc=SM9W-3TG%3A1293193204%2C382025101%2C383336001 : 21 August 2014