I had a couple of hours today so I worked on your genealogy. All this information is from the Grønholt, Lynge-Kronborg, Frederiksborg church records. The first three children in the 1890 census are from the marriage of Hans Nielsen and his first wife Karen Marie Jensen. The last two children are from Hans Nielsen's second marriage to Maren Kirstine Larsen.
Hans Nielsen was born 29 Nov 1842, parents Miels Hansen and Sidse Marie Pedersen, opslag 6 nr 21.
Maren Kirstine Larsen was born 31 Dec 1848, parents Lars Pedersen and Sidse Nielsen, opslag 103 nr 26.
Hans Nielsen married Karen Marie Jensen 25 Nov 1871, opslag 248 nr 6.
Karen Marie Jensen died 12 May 1883, opslag 42 nr 8.
Hans Nielsen married Maren Kirstine Larsen 15 Feb 1884, opslag 65 nr 1.
Hope this helps.