David was born on December 21st, 1905 and his baptism took place on January 31st, 1906 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-F59 : accessed 10 Nov 2012), David Schalk Maartens, 1906.