RootsChat.Com

You may already have seen this, but in case not:

the Spalding Guardian of 18/8/1928

  THE DEATH occurred at Adra, India, recently, of Regimental Sergt.- Major Louis Coley, son of Mrs. L. Coley, of London-road. Spalding. The deceased was  badly wounded in the face during the war, and was to have come home this year...
 

Apparently, although it was thought it would be better for his health to return home, he remained as a son was born.
 

David appears to have been a church Vestryman too:

https://www.cotyroneireland.com/churchrecord/donagheadyVestrymen1870.html

Trade directory entry for David:

https://freepages.rootsweb.com/~cotyroneireland/genealogy/trade/donemana1874.html

A Margaret Robinson of Rallagh successfully claimed the OAP, according to various newspaper lists in February 1909. Pity I am not seeing her claim form in the archives, as it should have confirmed the names of her parents.

@GRob81, I think Tara also asked earlier, what brought you to focus on and/or believe that Robert's father was a David, when no name is mentioned on Robert's marriage?

Was it oral family history, handed down over the years, or is there any written source (official record or otherwise), for it?

Just to keep all possibilities open at moment, have you given any consideration to Robert having been born to an unmarried Robinson (or otherwise), female?

The Londonderry Sentinel of 9th March 1966, carried a very interesting article on a Mrs Ruth Walker of Goshaden, wife of a Samuel Walker. This Samuel was apparently a former UTA employee, so presumably the Ulster Transport Authority (which ran rail and bus transport in Northern Ireland and operated from 1948 until 1967). A possibility for the Samuel you are interested in, perhaps.

Other articles on this Ruth Walker indicate she was originally from Wales, whilst some say England. These also refer to her husband as a 'transport worker' and that he/they 'took over a derelict farm in Goshaden.' By 1960, she had apparently been in Northern Ireland for 13 years.

Perhaps worth reaching out to the Northern Ireland Goat Club to ask if any current members have links to and/or knowledge of, anyone related to this Ruth and Samuel and would be willing to pass on your details to them, in hope they might then contact you and confirm or rule out Samuel as having been one and the same as the railway driver.