Hendrik (Hein) Koster was born 11 September 1816 in Opperdoes, North Holland, Netherlands to Gerrit Koster (1770-1825) and Neeltje Warnaar (1773-1825) and died 22 January 1883 Hoogkarspel, North Holland, Netherlands of unspecified causes. He married Aagje Bijvoet (1820-1857) 2 April 1843 in Zwaag, North Holland, Netherlands. He married Antje Meester (1823-1905) 19 April 1860 in Opperdoes, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Gerrit Koster (1844-1917) | 19 May 1844 Hoogkarspel, North Holland, Netherlands | 30 July 1917 Wervershoof, North Holland, Netherlands | Grietje Grent (1845-1927) |
| Maartje Koster (1847-) | |||
| Neeltje Koster (1853-1931) | 4 March 1853 Hoogkarspel, North Holland, Netherlands | 7 March 1931 Andijk, North Holland, Netherlands | Jacob Sijm (1846-1910) |
| Aagje Koster (1857-1892) | |||
| Name | Birth | Death | Joined with |
| Jan Koster (1861-1951) | 15 February 1861 Hoogkarspel, North Holland, Netherlands | 26 July 1951 Westwoud, North Holland, Netherlands | Agatha Ruitenberg (1861-1923) |
Siblings
Residences
Footnotes (including sources)
| ‡ General |
| ₪ Wedding |
| ₪2 Wedding 2 |
| ¶ Death |