Jacobus Janse was die seun van Johan George van der Westhuizen en Gesina Johanna Janse van Rensburg.
Sy naam kom voor in hulle pa se sterfkennis van 1935.
eGGSA library Gravestones in South Africa Eastern Cape : Ooskaap Eastern Cape, PORT ELIZABETH, Urban area Eastern Cape, PORT ELIZABETH, Forest Hill, cemetery W - Surnames :: Vanne - W We - Surnames beginning with the letters We WESTHUIZEN, van der Surnames :: Vanne WESTHUIZEN Jacobus Janse, van der 1890-1963 & Johanna Elizabeth 1895-1992