He is married to Johanna Berendina Getkate.
They got married on April 12, 1884 at Blythdale, Lower Tugela, Natal, South Africa.Source 2
Cornelius was a Farmer at the time he married Johanna.
"South Africa, Natal Province, Civil Marriages, 1845-1955," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KDCK-LH3 : 10 March 2018), Cornelius Vijn and Johanna Berendina Getkate, 12 Apr 1884; citing Lower Tugela, Natal, South Africa; 00336; National Archives and Records Service of South Africa, Pretoria; 1,259,171.