From CWGC

Rank: Lieutenant
Date of Death: 03/12/1919
Regiment/Service: Royal North Devon Hussars
Grave Reference: II. 6.
Cemetery: MITCHAM (CHURCH ROAD) BURIAL GROUND

NB: Grave reference is wrong – the grave is in plot 6

Who died from wounds received in action outside Le Cateau 8th October 1918 Born 21st August 1892 Died 3rd December 1919

From CWGC

Rank: Private
Service No: 22678
Date of Death: 21/07/1916
Age: 22
Regiment/Service: Border Regiment 1st Bn. formerly (1681) East Surrey Regiment
Grave Reference: 8. 116.
Cemetery: MITCHAM (CHURCH ROAD) BURIAL GROUND
Additional Information: Son of George Thomas and Fanny Dann, of 16, Walpole Rd., Collier’s Wood, Merton, London.

Video of the research by Colliers Wood resident Diane Holmes, who talks about Private Dann at 4 minutes 54 seconds.