Johannes was born on January 10th, 1908 and his baptism took place on March 12th, 1908 in Bloemfontein.
Birth Notes
"South Africa, Free State Dutch Reformed Church Records, 1848-1956," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KZLS-JCD : accessed 10 Nov 2012), Johannes Henricus Maartens, 1908.