Keith Meintjes has provided files that document the genealogy of four prominent South Africans: Paul (Stephanus Johannes Paulus) Kruger, (10 October 1825 – 14 July 1904), President of the ZAR (9 May 1883 – 10 September 1900) Jan (Jan Christiaan) Smuts, (24 May 1870 – 11 September 1950), Prime Minister of South Africa (5 September 1939 – 4 June 1948) DF (Daniel François) Malan, (22 May 1874 – 7 February 1959), Prime Minister of South Africa (4 June 1948 – 30 November 1954) FW (Frederik Willem) de Klerk, (18.03.1936 - ), President of South Africa (20 September 1989 – 9 May 1994) Keith says: "I obtained these files, a decade ago, because I wanted to explore my relationships to these men. This is not authoritative current research, and it is not my own research. I know there are errors. But, I think they are useful and interesting."