Colin also said that Robert Armatage, Albert Wolland and George J Gibson must have known each other from childhood and lived close to each other in the village. Their service numbers were close (10406 10407 10412) implying that they joined up together. They would have also have known Basil & James Knott, or possibly served under them, as they were all originally in the 9th Battalion Northumberland Fusiliers prior to Robert's commission.
Colin also investigated Greenhead War Memorial and came to the conclusion that Robert Armitage died in the same action as Clive Joicey of Blenkinsopp Hall, Greenhead.
Fallen Railwaymen Database
Roll of Honour
The main sources of information are St Paul's Cathedral Order of Service 1919, various railway magazines of the time, the Commonwealth War Graves Commission, Soldiers Died in the Great War, various census, trade union registers and various railway war memorials, North Eastern Railway Magazines, Great Eastern Railway Magazines, London & North Western Railway Magazines, and London & North Western Railway Roll of Honour.
Harold W Whitten was born in Workington, Cumbria, the son of Mrs. Elizabeth Jane McKie Whitten. In the 1901 census he was aged 6, and resident with his grandparents, Abraham and Jane Whitten, in Whithorn, Wigtownshire, Scotland. In 1913 he was working as a porter at Heddon on the Wall Railway Station. He enlisted (at Whithorn) as a private (Service Number 6140) in 2nd Battalion of the Royal Scots Fusiliers.
He was wounded in action in October 1914, in field hospital 29 October 1914, transferred in sick convoy 30 October 1914. He was brought to Newcastle for treatment and on his recovery went again to France where he was killed in action on 10 March 1915 in the vicinity of Neuve Chappelle, at age 33. He is commemorated on Panel 12 and 13 LE TOURET MEMORIAL, Pas de Calais, France.
https://collection.sciencemuseumgroup.org.uk/objects/co445435/st-pauls-cathedral-divine-service..