Kornelis married Geeske Hindriks Blouw on 05 April 1834 in Slochteren, Groningen, Nederland. Geeske (daughter of Hindrik Andries Blaauw and Susanna Frideriks Dreise) was born in 1807 in Slochteren, Groningen, Nederland; was christened on 03 April 1807 in Slochteren, Groningen, Nederland; died in Date unknown. [Group Sheet] [Family Chart]

1. Zuzanna Hindriks Blaauw Winkel was born on 02 September 1832 in Weiwerd, Delfzijl, Groningen, Nederland; died on 01 June 1878 in Groningen, Groningen, Nederland.
2. Nanne Winkel was born on 05 March 1835 in Schildwolde, Slochteren, Groningen, Nederland; died on 22 October 1856 in Appingedam, Groningen, Nederland.
3. Hendrik Winkel was born on 09 April 1838 in Schildwolde, Slochteren, Groningen, Nederland; died on 27 December 1913 in Bierum, Groningen, Nederland.
4. Jan Winkel was born on 25 July 1841 in Wittewierum, Ten Boer, Groningen, Nederland; died on 17 July 1906 in Wirdum, Loppersum, Groningen, Nederland.
5. Jakob Winkel was born on 15 October 1844 in Schildwolde, Slochteren, Groningen, Nederland; died on 15 September 1876 in Farmsum, Delfzijl, Groningen, Nederland.
6. Pieter Winkel was born on 20 February 1849 in Siddeburen, Slochteren, Groningen, Nederland; died in Date unknown.

Kornelis married Hindrika Egberts van der Ploeg on 19 April 1873 in Slochteren, Groningen, Nederland. Hindrika (daughter of Egbert Hindriks van der Ploeg and Elisabeth Willems van der Dijk) was born on 03 April 1813 in Nieuw-Scheemda, Scheemda, Groningen, Nederland; died on 21 January 1894 in Zuidbroek, Groningen, Nederland. [Group Sheet] [Family Chart]

Nanne + Sietske Wolgem. Sietske was born in Date unknown; died in Date unknown. [Group Sheet] [Family Chart]