David Souter Robertson attached 2/21st

Hi All,
By chance i picked this man up in the eGGSA gravestone photographs in South Africa. David Souter Robertson, He died 1883 and is buried in NG Kerk Cemetery Wynberg, Cape Province. The grave states of Layhead Lanarkshire, and Ex Edinburgh City Militia.
He was attached to the 2/21st during the Zulu War and is on the Medal Roll.
The 1881 census gives a David Souter Robertson born 1863 Edinburgh address Lawhead House Carnwath Lanarkshire a apprentice Engineer. I believe this must be his son.
David Souter Robertson appears in two London Gazettes with rank promotions in the Edinburgh City Militia and Queens Regiment of Light Infantry, 10 Jan 1870 to Lieutenant, and 5 May 1875 to Captain. He is also in the 1878 Army List as Capt Queens Reg of L I [Edinburgh].
I missed the date but, Father of the bride D.S. Robertson at St John's Episcopol Church Edinburgh Ann Chaplin Robertson to Captain George Newcombe Stevenson 91st [He also served in the Zulu War] they would have two children, a David Souter Robertson born 1803 [must be our David's Father] appears in the 1871 census address Lawhead House, he also appears on the 1881 census at Murlington House Brechin Forfarshire, also here are two Officers with the surname Chaplin,[daughters middle name] and two grandchildren Ethel and George Stevenson [Stevenson 91st Annie his wife died in 1877 after childbirth].
David Souter Robertson went on the reserve of Officers on 22 Dec 1880 and resigned his commission on either 1st June or 1st October 1881.
In Dean Cemetery Edinburgh there is a memorial to Davids wife and daughter [stevenson 91st] that lists both of them.
Rai Keynshamlighthorse.

Hi Rai

The London Gazette July 24th 1860

The Queen has been pleased to grant unto David Souter Robertson, formerly David Robinson Souter, of Whitchill, in the county of Larnark, Lithgow, and of Lawhoad ? LawHead? In the county of Larnark, one of her majesty's Deputy Lieutenants for the county of Larnark and Bute, her Royal licence and authority, that he and his issue may continue to use the surname Robertson after that of Souter.
And to command that the said Royal concession and decoration be recorded in Her Majesty's College of Arms, otherwise to be void and of none effect.
Whitehall July 16 1860.

Also found in the book: Seekers of truth: The Scottish Founders of Modern Public Accountancy the following:

David Souter Robertson was Stockbroker in London and a Captain in the Royal Scots Militia who Volunteered for the Zulu war in 1879 and was decorated in this campaign. He remained married in South Africa.

Captain George Newcombe Stevenson 91st Highland Regiment and son of George Robert Stevenson, a Justice of the peace in Kent. He and Anne had two daughters.

David's brother Thomas Robertson Souter (late Chaplin) attended the University of Edinburgh, was a Captain in the Highland borders Light Infantry Militia, and then Black Watch, and became a Photographer and an Artist in London.

Eddie