I sold that medal a while back, here is the research notes I made
SOUTH AFRICA MEDAL 1877 - 1879 TO CAPTAIN H. DYMES, 1st NATAL NATIVE CONTINGENT.
Harry Rawlins Dymes Attended Cambridge University, gaining a Degree before embarking for South Africa some time in 1877/8. He held the appointment of Mathematical Master at Hilton College before looking towards Military Service.
He was appointed to 1/1 NNC as Lieutenant 28th November 1878 and Captain 3rd January 1879. He served in various position while with the Battalion; as Company Commander, Adjutant and also Paymaster. Dymes resigned his Commission at the end of May 1879 and applied for a post with the Civil Service, but by 20th September 1879 he had applied to the Colonial secretary for employment in the Colonial Force being raised – presumably for the Basuto Campaign. I have not yet been able to trace if he was employed during the Campaigns of 1880/1 but there was a small unit called Dymes Rifles formed in 1880/81 that fought in Basutoland, Dymes being an unusual name…..
There are six pages concerning Dymes in 'A Soldiers Life' by Durnford – this in the form of informative descriptions by Dymes of the forming of the unit and anecdotes presumably taken from letters or a diary, which recount his service from the training of the Battalion right up to the day Durnford left for Isandhlwana. Dymes had been destined to go with the Company he was Commanding but at the very last minute was recalled to take the duty of Battalion Paymaster (the paymaster being ill) and his Company was split between Captain Stafford’s and Nourse to make two enlarged Companies rather than three. Something that probably saved his life says Dymes! . Where these letters are now and if there are more is a tantalising thought.
Harry Rawlins Dymes Died in Pietersmaritzburg 26th September 1891- his wife had died just a couple of months previously and his surviving Son was cared for by the sister of Mrs Dymes, a teacher.
A note to support the possibility of a link between Dymes and Dymes Rifles is the fact that H.R.Dymes died in 1891 and therefore would not have lived to claim the CGHGS medal.