No I do not have there death notices. If they died before 1834 the Archives here in South Africa will not have their death records.
For their marriage I found only an extract from - Extracts of marriages at the Cape of Good Hope, 1806-1821 (1920) Botha, Colin Graham, 1883-; The Genealogist
Ross, James, of Scotland; Isabella Lamont of Glasgow. Rev R Jones, 12-5-1811
And this from the Settlers of South Africa website
Ross, James
Last Name: Ross
First Name: James
Date of Birth:
Place of Birth: Scotland
Parents – Father:
Parents – Mother:
Name of Spouse: Isabella Lamont, from Glasgow
Marriage Date: 12 May 1811
Marriage Place: Cape Town
Date of Death:
Place of Death:
Notes: “British Residents at the Cape 1785-1819,” p. 360. Retail shopkeeper in Cape Town. Children:
John Alexander Ross, b. 20 Feb 1812, chr. 12 Apr 1812, d. 28 Oct 1813.
Alexander Ross (twin) b. 17 Jan 1814 chr. 5 Feb 1814
James Ross (twin) b. 17 Jan 1814 chr. 5 Feb 1814
Mary Helen Ross b. 25 Jun 1816 chr. 22 Jul 1816
John Norman McLeod Ross chr. 3 Jan 1819 (English church)
Patrick Colquhoun Ross chr. 4 Nov 1821 (English church)
Their children I have all there birth and death records. It is only the parents that I am struggling with.