- [S370] Lotter, Laurraine - 1820 Family Trees, Lotter, Laurraine, Jan 2003, Family tree.
- [S449] Collett, Joan, "A Time to Plant", 28 Feb 2003, p217.
Gervase attended the SA College in Cape Town for his last year at school in 1891. That year his sisters Emma (MY NOTE; christened Mary Emma) and Rosa had a double wedding at Grassridge, Rosa marrying her first cousin, Joe Maskell
- [S119] Stanton, Ellen, Stanton, Ellen, 28 Mar 2003, Microfilm #1560899.
Entry #390 Husband: Charles BUTLER, Full, Bachelor, Merchant, residing Cradock Wife: Mary Emma COLLETT, Full, Spinster, residing Grass Ridge Date: 10/14/1891 Witnesses: W. S. RAYNER, M. R. COLLETT Minister: W. B. RAYNER